Cord Stock
Cord Stock
For large-diameter sealing or specialized static applications, cord stock is the ideal choice. It offers the flexibility to customize solutions where standard O-rings cannot suffice. Choosing KODA gives you access to an instant inventory of over 100 varieties. Whether you need specific cross-sections, materials, or durometers, our extensive product line has you covered. Every item is manufactured to rigorous quality standards, providing you with reliable sealing assurance.
How We Supply Rope
KODA is committed to providing flexible purchasing and usage solutions, ensuring you can quickly and easily obtain the exact materials, quantities, and specifications you need.
We stock standard spool lengths in popular sizes, materials, and dimensions to keep your inventory optimized and ready for demand fluctuations. Additionally, we offer custom-length cutting to minimize waste and streamline your manufacturing process.
Beyond supplying high-quality cord stock, we provide in-house splicing/vulcanization services, fabricating custom-sized O-rings of nearly any diameter from our inventory. Whether you need custom dimensions or have special application requirements, the KODA team is ready to support you.
Rope specifications
KODA offers a comprehensive range of cord stock specifications to meet diverse application needs. Each specification is precision-engineered to satisfy specific performance criteria, ensuring optimal functionality in your application.
- Round Cord (O-Ring Cord): The most versatile cross-section, ideal for fabricating non-standard O-rings and widely used in various static sealing applications.
- Back-up Ring Cord: Designed to mimic standard back-up ring geometry. When used with O-rings, it significantly enhances anti-extrusion properties in high-pressure environments.
- X-Ring Cord: Features a unique four-lip design that provides multiple sealing surfaces. It effectively reduces friction and wear compared to standard round profiles.
- Square Cord: Offers a larger sealing surface area. Commonly used in static applications where increased stability and enhanced extrusion resistance are beneficial.
- Rectangular Cord: Provides a wider sealing surface for gland designs that require a non-square cross-section, serving as an optimal alternative to square cord.
Umbilical cord compounds
We offer a comprehensive range of cord materials to meet the rigorous demands of various sealing applications. Whether you require superior oil resistance, extreme temperature tolerance, or excellent weatherability, our stock inventory covers the most common industry needs.
The table below lists our commonly used cord materials and their key characteristics. If you need a material not listed, or require custom extruded products in specific shapes, sizes, materials, colors, or other specifications, please call +86 18730921709 or fill out the product inquiry form to submit your requirements.
| Compounds | Durometer | Material | Description | Color | Temp Range (F) |
|---|---|---|---|---|---|
| A75-G101 | 78 | AFLAS | General purpose | Black | +14 to +400 |
| A90-G101 | 90 | AFLAS | General purpose | Black | +14 to +400 |
| C70-D101 | 70 | Neoprene | Environmental resistance | Black | -40 to +212 |
| E70-D101 | 70 | EPDM | General purpose | Black | -67 to +257 |
| E70-E501 | 70 | EPDM | FDA-Grade | White | -40 to +250 |
| F70-E401 | 70 | Fluorosilicone | Mil-R-25988B Class 1 Grade 70 Type 2 | Blue | -76 to +350 |
| H80-E101 | 80 | HNBR | Heat/Chemical resistance | Black | -40 to +320 |
| H90-S101 | 90 | HNBR | Heat/Chemical resistance | Black | -40 to +320 |
| N50-E101 | 50 | NBR | General purpose | Black | -40 to +212 |
| N70-D101 | 70 | NBR | General purpose | Black | -40 to +212 |
| N70-E501 | 70 | NBR | FDA-Grade | White | -40 to +212 |
| N90-E101 | 90 | NBR | General purpose | Black | -40 to +212 |
| S50-E601 | 50 | Silicone | FDA Compliant, ZZ-R-765 Class 2A & 2B Grade 50 | Red | -65 to +425 |
| S70-D601 | 70 | Silicone | FDA-Grade | Red | -76 to +437 |
| V75-G101 | 75 | FKM | Viton GFLTS | Black | -40 to +400 |
| V75-G103 | 75 | FKM | General purpose Genuine Viton | Black | -25 to +400 |
| V75-G201 | 75 | FKM | General purpose Genuine Viton | Brown | +1 to +400 |
| V75-G501 | 75 | FKM | FDA-Grade Genuine Viton | White | -2 to +400 |
| V90-G101 | 90 | FKM | General purpose Genuine Viton | Black | -25 to +400 |
Rope dimensions and tolerances
The table below lists our standard cord stock sizes, available in both metric and imperial measurements. All cord stock is manufactured to meet ARPM Class E2 tolerances, ensuring consistent manufacturing quality and performance. For Viton® cord stock, we maintain tolerances that exceed the high-precision (E1) standard, providing superior dimensional accuracy.
If your application requires tighter tolerances or non-standard dimensions, please contact us to explore viable solutions.
| Inch | MM | Common Name | Tolerance | LOW | High |
|---|---|---|---|---|---|
| .039 | 1 | 1 MM | +/- .010 | 0.029 | 0.049 |
| .063 | 1.6 | 1/16” Actual | +/- .014 | 0.049 | 0.077 |
| .070 | 1.8 | 1/16” Nominal | +/- .014 | 0.056 | 0.084 |
| .079 | 2 | 2 MM | +/- .014 | 0.065 | 0.093 |
| .093 | 2.4 | 3/32” Actual | +/- .014 | 0.079 | 0.107 |
| .103 | 2.6 | 3/32” Nominal | +/- .016 | 0.087 | 0.119 |
| .118 | 3 | 3 MM | +/- .016 | 0.102 | 0.134 |
| .125 | 3.2 | 1/8” Actual | +/- .016 | 0.109 | 0.141 |
| .139 | 3.5 | 1/8” Nominal | +/- .016 | 0.123 | 0.155 |
| .157 | 4 | 4 MM | +/- .016 | 0.141 | 0.173 |
| .177 | 4.5 | 4.5 MM | +/- .020 | 0.157 | 0.197 |
| .188 | 4.8 | 3/16” Actual | +/- .020 | 0.168 | 0.208 |
| .196 | 5 | 5 MM | +/- .020 | 0.176 | 0.216 |
| .210 | 5.3 | 3/16” Nominal | +/- .020 | 0.19 | 0.23 |
| .218 | 5.5 | 7/32” | +/- .020 | 0.198 | 0.238 |
| .224 | 5.7 | 5.7 MM | +/- .020 | 0.204 | 0.244 |
| .236 | 6 | 6 MM | +/- .020 | 0.216 | 0.256 |
| .250 | 6.4 | 1/4” Actual | +/- .027 | 0.223 | 0.277 |
| .275 | 7 | 1/4” Nominal, 7MM | +/- .027 | 0.248 | 0.302 |
| .295 | 7.5 | 7.5 MM | +/- .027 | 0.268 | 0.322 |
| .313 | 8 | 5/16” | +/- .027 | 0.286 | 0.34 |
| .330 | 8.4 | 8.4 MM | +/- .027 | 0.303 | 0.357 |
| .354 | 9 | 9 MM | +/- .027 | 0.327 | 0.381 |
| .375 | 9.5 | 3/8” | +/- .027 | 0.348 | 0.402 |
| .393 | 10 | 10 MM | +/- .031 | 0.362 | 0.424 |
| .437 | 11.1 | 7/16” | +/- .031 | 0.406 | 0.468 |
| .472 | 12 | 12 MM | +/- .031 | 0.441 | 0.503 |
| .500 | 12.7 | 1/2” | +/- .031 | 0.469 | 0.531 |
| .550 | 14 | 14 MM | +/- .031 | 0.519 | 0.581 |
| .562 | 14.3 | 9/16” | +/- .031 | 0.531 | 0.593 |
| .590 | 15 | 15 MM | +/- .031 | 0.559 | 0.621 |
| .625 | 15.9 | 5/8” | +/- .031 | 0.594 | 0.656 |
| .688 | 17.5 | 11/16” | +/- .039 | 0.649 | 0.727 |
| .750 | 19.1 | 3/4” | +/- .039 | 0.711 | 0.789 |
| .813 | 20.7 | 13/16” | +/- .039 | 0.774 | 0.852 |
| .875 | 22.2 | 7/8” | +/- .039 | 0.836 | 0.914 |
| 1.000 | 25.4 | 1” | +/- .051 | 0.949 | 1.051 |
| 1.125 | 28.6 | 1-1/8” | +/- .051 | 1.074 | 1.176 |
| 1.250 | 31.8 | 1-1/4” | +/- .051 | 1.199 | 1.301 |
| 1.375 | 34.9 | 1-3/8” | +/- .051 | 1.324 | 1.426 |
| 1.500 | 38.1 | 1-1/2” | +/- .051 | 1.449 | 1.551 |
