Backup Rings

Backup Rings Product Overview

To see all standard backup ring sizes, scroll down for the complete backup ring size comparison chart.

In sealing application scenarios, the support ring can provide additional anti-extrusion protection for sealing components, effectively preventing O-rings and other elastic seals from extrusion damage and failure under high-pressure conditions, large assembly gaps, and high temperature environments. Extrusion failure is one of the most typical failure modes of O-rings in practical applications. When the internal pressure of the system exceeds the tolerance threshold of the seal, the O-ring material will be squeezed into the gap of the mating components, and the extruded parts will quickly become worn and scratched, resulting in loss of sealing material. When material loss accumulates to a critical value, the sealing system will leak within a short period of time and eventually fail completely.

For the problem of extrusion failure, there are usually three solutions in the industry. The first solution is to reduce the fit gap and directly reduce the extrusion space of the seal. However, this solution will significantly improve the processing accuracy and cost of parts, and is less economical. The second option is to use a higher hardness O-ring material. Although high-hardness elastomers have better extrusion resistance, they are limited by material supply categories, and the sealing fit and sealing performance of high-hardness materials will significantly decrease under low-pressure conditions, so they are not an ideal choice in most scenarios. The third and most comprehensive solution is to install a support ring. The support ring is made of engineering materials with high hardness and high extrusion resistance. Commonly used materials include high-hardness nitrile rubber (NBR), fluorine rubber (FKM/Viton®), and polytetrafluoroethylene (PTFE).

The support ring is installed between the O-ring and the extrusion gap to prevent O-ring material from entering the gap through rigid support. In actual assembly, a single-sided support ring or a double-sided support ring can be selected according to the direction of pressure action of the sealing system. If the system pressure direction is unclear or there is bidirectional pressure, it is recommended to configure two support rings for each set of O-rings to achieve comprehensive and reliable protection.

For more information or to request a quote for spare rings, please call +86 18730921709 or submit the product inquiry form to the right.

Contoured Backup Rings

KODA provides multiple specifications of elastomer support rings from stock. The common materials are 90°NBR (nitrile rubber) and 90°FKM (fluorine rubber). For non-standard application scenarios, we can develop and provide support ring products made of other high-performance materials according to customer needs.

N8-90 – Nitrile 90 Duro Contoured Backup Rings
V8-90 – Viton® 90 Duro Contoured Backup Rings

Teflon (PTFE) Backup Rings

We also provide a variety of PTFE support rings, mainly divided into three structural forms: solid uncut, single-turn chamfered and spiral multi-turn.

STS – Solid Teflon Backup Rings

ST – Split Teflon Backup Rings

SP – Spiral Teflon Backup Rings

Backup Ring Size Chart

The following table covers the complete specifications of the mainstream AS568 standard backup ring, and simultaneously provides dimension data in both imperial and metric units to facilitate selection and comparison.
Note: The axial height dimension “A” is an exclusive parameter for the rubber arc backup ring; the PTFE backup ring adopts a straight end face structure and does not have an arc profile, so there is no definition of this dimension.

DASH	ID (in)	WIDTH (in)	THK (in)	A (in)	ID (mm)	WIDTH (mm)	THK (mm)	A (mm)
004	0.096	0.053	0.049	0.045	2.44	1.35	1.24	1.14
005	0.127	0.053	0.049	0.045	3.23	1.35	1.24	1.14
006	0.14	0.053	0.049	0.045	3.56	1.35	1.24	1.14
007	0.171	0.053	0.049	0.045	4.34	1.35	1.24	1.14
008	0.202	0.053	0.049	0.045	5.13	1.35	1.24	1.14
009	0.234	0.053	0.049	0.045	5.94	1.35	1.24	1.14
010	0.265	0.053	0.049	0.045	6.73	1.35	1.24	1.14
011	0.327	0.053	0.049	0.045	8.31	1.35	1.24	1.14
012	0.39	0.053	0.049	0.045	9.91	1.35	1.24	1.14
013	0.455	0.053	0.049	0.045	11.56	1.35	1.24	1.14
014	0.518	0.053	0.049	0.045	13.16	1.35	1.24	1.14
015	0.58	0.053	0.049	0.045	14.73	1.35	1.24	1.14
016	0.643	0.053	0.049	0.045	16.33	1.35	1.24	1.14
017	0.705	0.053	0.049	0.045	17.91	1.35	1.24	1.14
018	0.768	0.053	0.049	0.045	19.51	1.35	1.24	1.14
019	0.83	0.053	0.049	0.045	21.08	1.35	1.24	1.14
020	0.893	0.053	0.049	0.045	22.68	1.35	1.24	1.14
021	0.955	0.053	0.049	0.045	24.26	1.35	1.24	1.14
022	1.018	0.053	0.049	0.045	25.86	1.35	1.24	1.14
023	1.08	0.053	0.049	0.045	27.43	1.35	1.24	1.14
024	1.143	0.053	0.049	0.045	29.03	1.35	1.24	1.14
025	1.205	0.053	0.049	0.045	30.61	1.35	1.24	1.14
026	1.268	0.053	0.049	0.045	32.21	1.35	1.24	1.14
027	1.33	0.053	0.049	0.045	33.78	1.35	1.24	1.14
028	1.393	0.053	0.049	0.045	35.38	1.35	1.24	1.14
029	1.518	0.053	0.049	0.045	38.56	1.35	1.24	1.14
030	1.643	0.053	0.049	0.045	41.73	1.35	1.24	1.14
031	1.768	0.053	0.049	0.045	44.91	1.35	1.24	1.14
032	1.893	0.053	0.049	0.045	48.08	1.35	1.24	1.14
033	2.018	0.053	0.049	0.045	51.26	1.35	1.24	1.14
034	2.143	0.053	0.049	0.045	54.43	1.35	1.24	1.14
035	2.268	0.053	0.049	0.045	57.61	1.35	1.24	1.14
036	2.393	0.053	0.049	0.045	60.78	1.35	1.24	1.14
037	2.519	0.053	0.049	0.045	63.98	1.35	1.24	1.14
038	2.643	0.053	0.049	0.045	67.13	1.35	1.24	1.14
039	2.768	0.053	0.049	0.045	70.31	1.35	1.24	1.14
040	2.893	0.053	0.049	0.045	73.48	1.35	1.24	1.14
041	3.018	0.053	0.049	0.045	76.66	1.35	1.24	1.14
042	3.268	0.053	0.049	0.045	83.01	1.35	1.24	1.14
043	3.518	0.053	0.049	0.045	89.36	1.35	1.24	1.14
044	3.768	0.053	0.049	0.045	95.71	1.35	1.24	1.14
045	4.018	0.053	0.049	0.045	102.06	1.35	1.24	1.14
046	4.268	0.053	0.049	0.045	108.41	1.35	1.24	1.14
047	4.518	0.053	0.049	0.045	114.76	1.35	1.24	1.14
048	4.768	0.053	0.049	0.045	121.11	1.35	1.24	1.14
049	5.018	0.053	0.049	0.045	127.46	1.35	1.24	1.14
050	5.268	0.053	0.049	0.045	133.81	1.35	1.24	1.14
102	0.077	0.086	0.053	0.045	1.96	2.18	1.35	1.14
103	0.109	0.086	0.053	0.045	2.77	2.18	1.35	1.14
104	0.14	0.086	0.053	0.045	3.56	2.18	1.35	1.14
105	0.171	0.086	0.053	0.045	4.34	2.18	1.35	1.14
106	0.202	0.086	0.053	0.045	5.13	2.18	1.35	1.14
107	0.234	0.086	0.053	0.045	5.94	2.18	1.35	1.14
108	0.265	0.086	0.053	0.045	6.73	2.18	1.35	1.14
109	0.327	0.086	0.053	0.045	8.31	2.18	1.35	1.14
110	0.39	0.086	0.053	0.045	9.91	2.18	1.35	1.14
111	0.452	0.086	0.053	0.045	11.48	2.18	1.35	1.14
112	0.515	0.086	0.053	0.045	13.08	2.18	1.35	1.14
113	0.577	0.086	0.053	0.045	14.66	2.18	1.35	1.14
114	0.64	0.086	0.053	0.045	16.26	2.18	1.35	1.14
115	0.702	0.086	0.053	0.045	17.83	2.18	1.35	1.14
116	0.765	0.086	0.053	0.045	19.43	2.18	1.35	1.14
117	0.831	0.086	0.053	0.045	21.11	2.18	1.35	1.14
118	0.893	0.086	0.053	0.045	22.68	2.18	1.35	1.14
119	0.956	0.086	0.053	0.045	24.28	2.18	1.35	1.14
120	1.018	0.086	0.053	0.045	25.86	2.18	1.35	1.14
121	1.081	0.086	0.053	0.045	27.46	2.18	1.35	1.14
122	1.143	0.086	0.053	0.045	29.03	2.18	1.35	1.14
123	1.206	0.086	0.053	0.045	30.63	2.18	1.35	1.14
124	1.268	0.086	0.053	0.045	32.21	2.18	1.35	1.14
125	1.331	0.086	0.053	0.045	33.81	2.18	1.35	1.14
126	1.393	0.086	0.053	0.045	35.38	2.18	1.35	1.14
127	1.456	0.086	0.053	0.045	36.98	2.18	1.35	1.14
128	1.518	0.086	0.053	0.045	38.56	2.18	1.35	1.14
129	1.581	0.086	0.053	0.045	40.16	2.18	1.35	1.14
130	1.643	0.086	0.053	0.045	41.73	2.18	1.35	1.14
131	1.706	0.086	0.053	0.045	43.33	2.18	1.35	1.14
132	1.768	0.086	0.053	0.045	44.91	2.18	1.35	1.14
133	1.831	0.086	0.053	0.045	46.51	2.18	1.35	1.14
134	1.893	0.086	0.053	0.045	48.08	2.18	1.35	1.14
135	1.956	0.086	0.053	0.045	49.68	2.18	1.35	1.14
136	2.018	0.086	0.053	0.045	51.26	2.18	1.35	1.14
137	2.081	0.086	0.053	0.045	52.86	2.18	1.35	1.14
138	2.143	0.086	0.053	0.045	54.43	2.18	1.35	1.14
139	2.206	0.086	0.053	0.045	56.03	2.18	1.35	1.14
140	2.268	0.086	0.053	0.045	57.61	2.18	1.35	1.14
141	2.331	0.086	0.053	0.045	59.21	2.18	1.35	1.14
142	2.393	0.086	0.053	0.045	60.78	2.18	1.35	1.14
143	2.456	0.086	0.053	0.045	62.38	2.18	1.35	1.14
144	2.528	0.086	0.053	0.045	64.21	2.18	1.35	1.14
145	2.518	0.086	0.053	0.045	63.96	2.18	1.35	1.14
146	2.643	0.086	0.053	0.045	67.13	2.18	1.35	1.14
147	2.706	0.086	0.053	0.045	68.73	2.18	1.35	1.14
148	2.768	0.086	0.053	0.045	70.31	2.18	1.35	1.14
149	2.831	0.086	0.053	0.045	71.91	2.18	1.35	1.14
150	2.893	0.086	0.053	0.045	73.48	2.18	1.35	1.14
151	3.018	0.086	0.053	0.045	76.66	2.18	1.35	1.14
152	3.268	0.086	0.053	0.045	83.01	2.18	1.35	1.14
153	3.518	0.086	0.053	0.045	89.36	2.18	1.35	1.14
154	3.768	0.086	0.053	0.045	95.71	2.18	1.35	1.14
155	4.018	0.086	0.053	0.045	102.06	2.18	1.35	1.14
156	4.268	0.086	0.053	0.045	108.41	2.18	1.35	1.14
157	4.518	0.086	0.053	0.045	114.76	2.18	1.35	1.14
158	4.768	0.086	0.053	0.045	121.11	2.18	1.35	1.14
159	5.018	0.086	0.053	0.045	127.46	2.18	1.35	1.14
160	5.268	0.086	0.053	0.045	133.81	2.18	1.35	1.14
161	5.518	0.086	0.053	0.045	140.16	2.18	1.35	1.14
162	5.768	0.086	0.053	0.045	146.51	2.18	1.35	1.14
163	6.018	0.086	0.053	0.045	152.86	2.18	1.35	1.14
164	6.238	0.086	0.053	0.045	158.45	2.18	1.35	1.14
165	6.518	0.086	0.053	0.045	165.56	2.18	1.35	1.14
166	6.768	0.086	0.053	0.045	171.91	2.18	1.35	1.14
167	7.018	0.086	0.053	0.045	178.26	2.18	1.35	1.14
168	7.268	0.086	0.053	0.045	184.61	2.18	1.35	1.14
169	7.518	0.086	0.053	0.045	190.96	2.18	1.35	1.14
170	7.768	0.086	0.053	0.045	197.31	2.18	1.35	1.14
171	8.018	0.086	0.053	0.045	203.66	2.18	1.35	1.14
172	8.268	0.086	0.053	0.045	210.01	2.18	1.35	1.14
173	8.518	0.086	0.053	0.045	216.36	2.18	1.35	1.14
174	8.768	0.086	0.053	0.045	222.71	2.18	1.35	1.14
175	9.018	0.086	0.053	0.045	229.06	2.18	1.35	1.14
176	9.268	0.086	0.053	0.045	235.41	2.18	1.35	1.14
177	9.518	0.086	0.053	0.045	241.76	2.18	1.35	1.14
178	9.768	0.086	0.053	0.045	248.11	2.18	1.35	1.14
201	0.202	0.118	0.05	0.04	5.13	3	1.27	1.02
202	0.265	0.118	0.05	0.04	6.73	3	1.27	1.02
203	0.327	0.118	0.05	0.04	8.31	3	1.27	1.02
204	0.39	0.118	0.05	0.04	9.91	3	1.27	1.02
205	0.455	0.118	0.05	0.04	11.56	3	1.27	1.02
206	0.518	0.118	0.05	0.04	13.16	3	1.27	1.02
207	0.58	0.118	0.05	0.04	14.73	3	1.27	1.02
208	0.643	0.118	0.05	0.04	16.33	3	1.27	1.02
209	0.705	0.118	0.05	0.04	17.91	3	1.27	1.02
210	0.765	0.118	0.05	0.04	19.43	3	1.27	1.02
211	0.828	0.118	0.05	0.04	21.03	3	1.27	1.02
212	0.891	0.118	0.05	0.04	22.63	3	1.27	1.02
213	0.953	0.118	0.05	0.04	24.21	3	1.27	1.02
214	1.016	0.118	0.05	0.04	25.81	3	1.27	1.02
215	1.078	0.118	0.05	0.04	27.38	3	1.27	1.02
216	1.141	0.118	0.05	0.04	28.98	3	1.27	1.02
217	1.203	0.118	0.05	0.04	30.56	3	1.27	1.02
218	1.266	0.118	0.05	0.04	32.16	3	1.27	1.02
219	1.334	0.118	0.05	0.04	33.88	3	1.27	1.02
220	1.397	0.118	0.05	0.04	35.48	3	1.27	1.02
221	1.459	0.118	0.05	0.04	37.06	3	1.27	1.02
222	1.522	0.118	0.05	0.04	38.66	3	1.27	1.02
223	1.647	0.118	0.05	0.04	41.83	3	1.27	1.02
224	1.772	0.118	0.05	0.04	45.01	3	1.27	1.02
225	1.897	0.118	0.05	0.04	48.18	3	1.27	1.02
226	2.022	0.118	0.05	0.04	51.36	3	1.27	1.02
227	2.147	0.118	0.05	0.04	54.53	3	1.27	1.02
228	2.272	0.118	0.05	0.04	57.71	3	1.27	1.02
229	2.397	0.118	0.05	0.04	60.88	3	1.27	1.02
230	2.522	0.118	0.05	0.04	64.06	3	1.27	1.02
231	2.631	0.118	0.05	0.04	66.83	3	1.27	1.02
232	2.756	0.118	0.05	0.04	70	3	1.27	1.02
233	2.881	0.118	0.05	0.04	73.18	3	1.27	1.02
234	3.006	0.118	0.05	0.04	76.35	3	1.27	1.02
235	3.131	0.118	0.05	0.04	79.53	3	1.27	1.02
236	3.256	0.118	0.05	0.04	82.7	3	1.27	1.02
237	3.381	0.118	0.05	0.04	85.88	3	1.27	1.02
238	3.506	0.118	0.05	0.04	89.05	3	1.27	1.02
239	3.631	0.118	0.05	0.04	92.23	3	1.27	1.02
240	3.756	0.118	0.05	0.04	95.4	3	1.27	1.02
241	3.881	0.118	0.05	0.04	98.58	3	1.27	1.02
242	4.006	0.118	0.05	0.04	101.75	3	1.27	1.02
243	4.131	0.118	0.05	0.04	104.93	3	1.27	1.02
244	4.256	0.118	0.05	0.04	108.1	3	1.27	1.02
245	4.381	0.118	0.05	0.04	111.28	3	1.27	1.02
246	4.506	0.118	0.05	0.04	114.45	3	1.27	1.02
247	4.631	0.118	0.05	0.04	117.63	3	1.27	1.02
248	4.768	0.118	0.05	0.04	121.11	3	1.27	1.02
249	4.893	0.118	0.05	0.04	124.28	3	1.27	1.02
250	5.018	0.118	0.05	0.04	127.46	3	1.27	1.02
251	5.143	0.118	0.05	0.04	130.63	3	1.27	1.02
252	5.268	0.118	0.05	0.04	133.81	3	1.27	1.02
253	5.393	0.118	0.05	0.04	136.98	3	1.27	1.02
254	5.518	0.118	0.05	0.04	140.16	3	1.27	1.02
255	5.643	0.118	0.05	0.04	143.33	3	1.27	1.02
256	5.768	0.118	0.05	0.04	146.51	3	1.27	1.02
257	5.893	0.118	0.05	0.04	149.68	3	1.27	1.02
258	6.018	0.118	0.05	0.04	152.86	3	1.27	1.02
259	6.268	0.118	0.05	0.04	159.21	3	1.27	1.02
260	6.518	0.118	0.05	0.04	165.56	3	1.27	1.02
261	6.768	0.118	0.05	0.04	171.91	3	1.27	1.02
262	7.018	0.118	0.05	0.04	178.26	3	1.27	1.02
263	7.268	0.118	0.05	0.04	184.61	3	1.27	1.02
264	7.518	0.118	0.05	0.04	190.96	3	1.27	1.02
265	7.768	0.118	0.05	0.04	197.31	3	1.27	1.02
266	8.018	0.118	0.05	0.04	203.66	3	1.27	1.02
267	8.268	0.118	0.05	0.04	210.01	3	1.27	1.02
268	8.518	0.118	0.05	0.04	216.36	3	1.27	1.02
269	8.768	0.118	0.05	0.04	222.71	3	1.27	1.02
270	9.018	0.118	0.05	0.04	229.06	3	1.27	1.02
271	9.268	0.118	0.05	0.04	235.41	3	1.27	1.02
272	9.518	0.118	0.05	0.04	241.76	3	1.27	1.02
273	9.768	0.118	0.05	0.04	248.11	3	1.27	1.02
274	10.018	0.118	0.05	0.04	254.46	3	1.27	1.02
275	10.518	0.118	0.05	0.04	267.16	3	1.27	1.02
276	11.018	0.118	0.05	0.04	279.86	3	1.27	1.02
277	11.518	0.118	0.05	0.04	292.56	3	1.27	1.02
278	12.018	0.118	0.05	0.04	305.26	3	1.27	1.02
279	13.018	0.118	0.05	0.04	330.66	3	1.27	1.02
280	14.018	0.118	0.05	0.04	356.06	3	1.27	1.02
281	15.018	0.118	0.05	0.04	381.46	3	1.27	1.02
282	15.989	0.118	0.05	0.04	406.12	3	1.27	1.02
283	16.989	0.118	0.05	0.04	431.52	3	1.27	1.02
284	17.989	0.118	0.05	0.04	456.92	3	1.27	1.02
309	0.45	0.183	0.076	0.06	11.43	4.65	1.93	1.52
310	0.513	0.183	0.076	0.06	13.03	4.65	1.93	1.52
311	0.575	0.183	0.076	0.06	14.61	4.65	1.93	1.52
312	0.638	0.183	0.076	0.06	16.21	4.65	1.93	1.52
313	0.7	0.183	0.076	0.06	17.78	4.65	1.93	1.52
314	0.763	0.183	0.076	0.06	19.38	4.65	1.93	1.52
315	0.825	0.183	0.076	0.06	20.96	4.65	1.93	1.52
316	0.888	0.183	0.076	0.06	22.56	4.65	1.93	1.52
317	0.95	0.183	0.076	0.06	24.13	4.65	1.93	1.52
318	1.013	0.183	0.076	0.06	25.73	4.65	1.93	1.52
319	1.075	0.183	0.076	0.06	27.31	4.65	1.93	1.52
320	1.138	0.183	0.076	0.06	28.91	4.65	1.93	1.52
321	1.2	0.183	0.076	0.06	30.48	4.65	1.93	1.52
322	1.263	0.183	0.076	0.06	32.08	4.65	1.93	1.52
323	1.316	0.183	0.076	0.06	33.43	4.65	1.93	1.52
324	1.388	0.183	0.076	0.06	35.26	4.65	1.93	1.52
325	1.513	0.183	0.076	0.06	38.43	4.65	1.93	1.52
326	1.638	0.183	0.076	0.06	41.61	4.65	1.93	1.52
327	1.763	0.183	0.076	0.06	44.78	4.65	1.93	1.52
328	1.888	0.183	0.076	0.06	47.96	4.65	1.93	1.52
329	2.013	0.183	0.076	0.06	51.13	4.65	1.93	1.52
330	2.138	0.183	0.076	0.06	54.31	4.65	1.93	1.52
331	2.268	0.183	0.076	0.06	57.61	4.65	1.93	1.52
332	2.393	0.183	0.076	0.06	60.78	4.65	1.93	1.52
333	2.518	0.183	0.076	0.06	63.96	4.65	1.93	1.52
334	2.643	0.183	0.076	0.06	67.13	4.65	1.93	1.52
335	2.768	0.183	0.076	0.06	70.31	4.65	1.93	1.52
336	2.893	0.183	0.076	0.06	73.48	4.65	1.93	1.52
337	3.018	0.183	0.076	0.06	76.66	4.65	1.93	1.52
338	3.143	0.183	0.076	0.06	79.83	4.65	1.93	1.52
339	3.273	0.183	0.076	0.06	83.13	4.65	1.93	1.52
340	3.398	0.183	0.076	0.06	86.31	4.65	1.93	1.52
341	3.523	0.183	0.076	0.06	89.48	4.65	1.93	1.52
342	3.648	0.183	0.076	0.06	92.66	4.65	1.93	1.52
343	3.773	0.183	0.076	0.06	95.83	4.65	1.93	1.52
344	3.898	0.183	0.076	0.06	99.01	4.65	1.93	1.52
345	4.028	0.183	0.076	0.06	102.31	4.65	1.93	1.52
346	4.153	0.183	0.076	0.06	105.49	4.65	1.93	1.52
347	4.278	0.183	0.076	0.06	108.66	4.65	1.93	1.52
348	4.403	0.183	0.076	0.06	111.84	4.65	1.93	1.52
349	4.528	0.183	0.076	0.06	115.01	4.65	1.93	1.52
350	4.653	0.183	0.076	0.06	118.19	4.65	1.93	1.52
351	4.778	0.183	0.076	0.06	121.36	4.65	1.93	1.52
352	4.903	0.183	0.076	0.06	124.54	4.65	1.93	1.52
353	5.028	0.183	0.076	0.06	127.71	4.65	1.93	1.52
354	5.153	0.183	0.076	0.06	130.89	4.65	1.93	1.52
355	5.278	0.183	0.076	0.06	134.06	4.65	1.93	1.52
356	5.403	0.183	0.076	0.06	137.24	4.65	1.93	1.52
357	5.528	0.183	0.076	0.06	140.41	4.65	1.93	1.52
358	5.653	0.183	0.076	0.06	143.59	4.65	1.93	1.52
359	5.778	0.183	0.076	0.06	146.76	4.65	1.93	1.52
360	5.903	0.183	0.076	0.06	149.94	4.65	1.93	1.52
361	6.028	0.183	0.076	0.06	153.11	4.65	1.93	1.52
362	6.278	0.183	0.076	0.06	159.46	4.65	1.93	1.52
363	6.528	0.183	0.076	0.06	165.81	4.65	1.93	1.52
364	6.778	0.183	0.076	0.06	172.16	4.65	1.93	1.52
365	7.028	0.183	0.076	0.06	178.51	4.65	1.93	1.52
366	7.278	0.183	0.076	0.06	184.86	4.65	1.93	1.52
367	7.528	0.183	0.076	0.06	191.21	4.65	1.93	1.52
368	7.778	0.183	0.076	0.06	197.56	4.65	1.93	1.52
369	8.028	0.183	0.076	0.06	203.91	4.65	1.93	1.52
370	8.278	0.183	0.076	0.06	210.26	4.65	1.93	1.52
371	8.528	0.183	0.076	0.06	216.61	4.65	1.93	1.52
372	8.778	0.183	0.076	0.06	222.96	4.65	1.93	1.52
373	9.028	0.183	0.076	0.06	229.31	4.65	1.93	1.52
374	9.278	0.183	0.076	0.06	235.66	4.65	1.93	1.52
375	9.528	0.183	0.076	0.06	242.01	4.65	1.93	1.52
376	9.778	0.183	0.076	0.06	248.36	4.65	1.93	1.52
377	10.028	0.183	0.076	0.06	254.71	4.65	1.93	1.52
378	10.528	0.183	0.076	0.06	267.41	4.65	1.93	1.52
379	11.028	0.183	0.076	0.06	280.11	4.65	1.93	1.52
380	11.528	0.183	0.076	0.06	292.81	4.65	1.93	1.52
381	12.028	0.183	0.076	0.06	305.51	4.65	1.93	1.52
382	13.028	0.183	0.076	0.06	330.91	4.65	1.93	1.52
383	14.028	0.183	0.076	0.06	356.31	4.65	1.93	1.52
384	15.028	0.183	0.076	0.06	381.71	4.65	1.93	1.52
385	16.008	0.183	0.076	0.06	406.6	4.65	1.93	1.52
386	17.008	0.183	0.076	0.06	432	4.65	1.93	1.52
387	18.008	0.183	0.076	0.06	457.4	4.65	1.93	1.52
388	19.006	0.183	0.076	0.06	482.75	4.65	1.93	1.52
389	20.006	0.183	0.076	0.06	508.15	4.65	1.93	1.52
390	21.006	0.183	0.076	0.06	533.55	4.65	1.93	1.52
391	22.006	0.183	0.076	0.06	558.95	4.65	1.93	1.52
392	22.993	0.183	0.076	0.06	584.02	4.65	1.93	1.52
393	23.993	0.183	0.076	0.06	609.42	4.65	1.93	1.52
394	24.993	0.183	0.076	0.06	634.82	4.65	1.93	1.52
395	25.993	0.183	0.076	0.06	660.22	4.65	1.93	1.52
425	4.551	0.236	0.117	0.095	115.6	5.99	2.97	2.41
426	4.676	0.236	0.117	0.095	118.77	5.99	2.97	2.41
427	4.801	0.236	0.117	0.095	121.95	5.99	2.97	2.41
428	4.926	0.236	0.117	0.095	125.12	5.99	2.97	2.41
429	5.051	0.236	0.117	0.095	128.3	5.99	2.97	2.41
430	5.176	0.236	0.117	0.095	131.47	5.99	2.97	2.41
431	5.301	0.236	0.117	0.095	134.65	5.99	2.97	2.41
432	5.426	0.236	0.117	0.095	137.82	5.99	2.97	2.41
433	5.551	0.236	0.117	0.095	141	5.99	2.97	2.41
434	5.676	0.236	0.117	0.095	144.17	5.99	2.97	2.41
435	5.801	0.236	0.117	0.095	147.35	5.99	2.97	2.41
436	5.926	0.236	0.117	0.095	150.52	5.99	2.97	2.41
437	6.051	0.236	0.117	0.095	153.7	5.99	2.97	2.41
438	6.274	0.236	0.117	0.095	159.36	5.99	2.97	2.41
439	6.525	0.236	0.117	0.095	165.74	5.99	2.97	2.41
440	6.774	0.236	0.117	0.095	172.06	5.99	2.97	2.41
441	7.024	0.236	0.117	0.095	178.41	5.99	2.97	2.41
442	7.274	0.236	0.117	0.095	184.76	5.99	2.97	2.41
443	7.524	0.236	0.117	0.095	191.11	5.99	2.97	2.41
444	7.774	0.236	0.117	0.095	197.46	5.99	2.97	2.41
445	8.024	0.236	0.117	0.095	203.81	5.99	2.97	2.41
446	8.524	0.236	0.117	0.095	216.51	5.99	2.97	2.41
447	9.024	0.236	0.117	0.095	229.21	5.99	2.97	2.41
448	9.524	0.236	0.117	0.095	241.91	5.99	2.97	2.41
449	10.024	0.236	0.117	0.095	254.61	5.99	2.97	2.41
450	10.524	0.236	0.117	0.095	267.31	5.99	2.97	2.41
451	11.024	0.236	0.117	0.095	280.01	5.99	2.97	2.41
452	11.524	0.236	0.117	0.095	292.71	5.99	2.97	2.41
453	12.024	0.236	0.117	0.095	305.41	5.99	2.97	2.41
454	12.524	0.236	0.117	0.095	318.11	5.99	2.97	2.41
455	13.024	0.236	0.117	0.095	330.81	5.99	2.97	2.41
456	13.524	0.236	0.117	0.095	343.51	5.99	2.97	2.41
457	14.024	0.236	0.117	0.095	356.21	5.99	2.97	2.41
458	14.554	0.236	0.117	0.095	369.67	5.99	2.97	2.41
459	15.024	0.236	0.117	0.095	381.61	5.99	2.97	2.41
460	15.524	0.236	0.117	0.095	394.31	5.99	2.97	2.41
461	16.004	0.236	0.117	0.095	406.5	5.99	2.97	2.41
462	16.504	0.236	0.117	0.095	419.2	5.99	2.97	2.41
463	17.004	0.236	0.117	0.095	431.9	5.99	2.97	2.41
464	17.504	0.236	0.117	0.095	444.6	5.99	2.97	2.41
465	18.004	0.236	0.117	0.095	457.3	5.99	2.97	2.41
466	18.504	0.236	0.117	0.095	470	5.99	2.97	2.41
467	19.004	0.236	0.117	0.095	482.7	5.99	2.97	2.41
468	19.504	0.236	0.117	0.095	495.4	5.99	2.97	2.41
469	20.004	0.236	0.117	0.095	508.1	5.99	2.97	2.41
470	21.004	0.236	0.117	0.095	533.5	5.99	2.97	2.41
471	22.004	0.236	0.117	0.095	558.9	5.99	2.97	2.41
472	23.004	0.236	0.117	0.095	584.3	5.99	2.97	2.41
473	24.004	0.236	0.117	0.095	609.7	5.99	2.97	2.41
474	25.004	0.236	0.117	0.095	635.1	5.99	2.97	2.41
475	26.004	0.236	0.117	0.095	660.5	5.99	2.97	2.41

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Overview of oil seals

We can meet your oil seal needs! Contact us today for the best personalized quote!

Oil seal model classification

Overview of O-rings

When you need them, please contact us to get the highest quality O-rings.

O-Rings by Material

O-Rings by Application

Other Rings

O-Ring Kits

Engine Mount Overview

For information on engine mounts, please contact us for a quote.

Vehicle Classification

SIZE CHARTS

MATERIALS

TABLES & CALCULATORS

OTHER RESOURCES

Backup Rings

Backup Rings Product Overview

Contoured Backup Rings

Teflon (PTFE) Backup Rings

Backup Ring Size Chart

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