PU backup ring is designed to offer superior sealing and prevent leakage. Made from high-quality materials, it ensures long-lasting performance and protection. This ring enhances the efficiency of your equipment by providing reliable sealing in various industrial applications.
The high-performance PU backup ring is designed to improve sealing reliability and reduce leakage in demanding industrial applications. It provides strong support for O-rings, helping prevent extrusion and seal failure under pressure. Its durable structure makes it suitable for equipment requiring consistent and stable sealing performance.
Compared with TPE, PTFE, and NBR90 backup rings, PU backup rings offer stronger pressure resistance and dependable protection. They are widely used with AS568 standard O-rings and are ideal for sealing systems that require long service life, efficient performance, and reliable operation in industrial environments.
For sealing systems exposed to pressure and leakage risks, PU backup rings provide an effective solution by supporting O-rings and preventing seal extrusion. Their strong pressure resistance and durable polyurethane material help extend seal life, reduce maintenance frequency, and improve the operational reliability of industrial equipment.
|
O Ring size |
Backup Ring Size | O Ring size | Backup Ring Size | |||||
| d1 | D1 | L1 | d1 | |||||
| 1.24×2.62 (AS102) | 1.96 | 6.32 | 1.14 | 15.24×5.3(AS312) | 16.21 | 25.50 | 1.52 | |
| 1.78×1.78 (AS004) | 2.44 | 5.13 | 1.14 | 15.54×2.6(AS114) | 16.26 | 20.62 | 1.14 | |
| 2.06×2.62 (AS103) | 2.77 | 7.14 | 1.14 | 15.6×1.78 (AS016) | 16.33 | 19.02 | 1.14 | |
| 2.57×1.78(AS005) | 3.23 | 5.92 | 1.14 | 15.47×3.5(AS208) | 16.33 | 22.33 | 1.02 | |
| 2.9×1.78 (AS006) | 3.56 | 6.25 | 1.14 | 15.88×2.6(AS809) | 16.60 | 20.97 | 1.14 | |
| 2.84×2.62(AS104) | 3.56 | 7.92 | 1.14 | 16.81×5.3(AS313) | 17.78 | 27.08 | 1.52 | |
| 3.68×1.78(AS007) | 4.34 | 7.04 | 1.14 | 17.17×1.7(AS017) | 17.91 | 20.60 | 1.14 | |
| 3.63×2.62(AS105) | 4.34 | 8.71 | 1.14 | 17.04×3.5(AS209) | 17.91 | 23.90 | 1.02 | |
| 4.47×1.78(AS008) | 5.13 | 7.82 | 1.14 | 17.12×2.6(AS115) | 18.29 | 22.66 | 1.14 | |
| 4.42×2.62(AS106) | 5.13 | 9.50 | 1.14 | 17.46×2.6(AS810) | 18.63 | 23.00 | 1.14 | |
| 4.34×3.53(AS201) | 5.13 | 11.13 | 1.02 | 17.86×2.6(AS617) | 19.03 | 23.40 | 1.14 | |
| 5.28×1.78(AS009) | 5.94 | 8.64 | 1.14 | 18.42×5.3(AS314) | 19.38 | 28.68 | 1.52 | |
| 5.23×2.62(AS107) | 5.94 | 10.31 | 1.14 | 18.72×2.6(AS116) | 19.43 | 23.80 | 1.14 | |
| 6.07×1.78(AS010) | 6.73 | 9.42 | 1.14 | 18.64×3.5(AS210) | 19.46 | 25.45 | 1.02 | |
| 6.02×2.62(AS108) | 6.73 | 11.10 | 1.14 | 18.77×1.7(AS018) | 19.51 | 22.20 | 1.14 | |
| 5.94×3.53(AS202) | 6.73 | 12.73 | 1.02 | 19.99×5.3(AS315) | 20.96 | 30.25 | 1.52 | |
| 7.65×1.78(AS011) | 8.31 | 11.00 | 1.14 | 20.22×3.5(AS211) | 21.03 | 27.03 | 1.02 | |
| 7.59×2.62(AS109) | 8.31 | 12.67 | 1.14 | 20.35×1.7(AS019) | 21.08 | 23.77 | 1.14 | |
| 7.52×3.53(AS203) | 8.31 | 14.30 | 1.02 | 20.29×2.6(AS117) | 21.11 | 25.48 | 1.14 | |
| 9.25×1.78(AS012) | 9.91 | 12.60 | 1.14 | 20.64×2.6(AS812) | 21.45 | 25.82 | 1.14 | |
| 9.19×2.62(AS110) | 9.91 | 14.27 | 1.14 | 21.59×5.3(AS316) | 22.56 | 31.85 | 1.52 | |
| 9.12×3.53(AS204) | 9.91 | 15.90 | 1.02 | 21.82×3.5(AS212) | 22.63 | 28.63 | 1.02 | |
| 9.9×2.62 (AS613) | 10.62 | 14.99 | 1.14 | 21.95×1.7(AS020) | 22.68 | 25.37 | 1.14 | |
| 10.46×5.33(AS309) | 11.43 | 20.73 | 1.52 | 21.89×2.6(AS118) | 22.68 | 27.05 | 1.14 | |
| 10.77×2.62(AS111) | 11.48 | 15.85 | 1.14 | 22.23×2.6(AS813) | 23.02 | 27.39 | 1.14 | |
| 10.82×1.78(AS013) | 11.56 | 14.25 | 1.14 | 23.16×5.3(AS317) | 24.13 | 33.43 | 1.52 | |
| 10.69×3.53(AS205) | 11.56 | 17.55 | 1.02 | 23.39×3.5(AS213) | 24.21 | 30.20 | 1.02 | |
| 11.91×2.62(AS614) | 12.62 | 16.99 | 1.14 | 23.52×1.7(AS021) | 24.26 | 26.95 | 1.14 | |
| 12.07×5.33(AS310) | 13.03 | 22.33 | 1.52 | 23.47×2.6(AS119) | 24.28 | 28.65 | 1.14 | |
| 12.37×2.62(AS112) | 13.08 | 17.45 | 1.14 | 23.81×2.6(AS814) | 24.62 | 28.99 | 1.14 | |
| 12.42×1.78(AS014) | 13.16 | 15.85 | 1.14 | 24.77×5.3(AS318) | 25.73 | 35.03 | 1.52 | |
| 12.29×3.53(AS206) | 13.16 | 19.15 | 1.02 | 25×3.53 (AS214) | 25.81 | 31.80 | 1.02 | |
| 12.7×2.62 (AS807) | 13.41 | 17.78 | 1.14 | 25.12×1.7(AS022) | 25.86 | 28.55 | 1.14 | |
| 13.1×2.62 (AS615) | 13.81 | 18.18 | 1.14 | 25.07×2.62(AS120) | 25.86 | 30.23 | 1.14 | |
| 13.94×2.62(AS113) | 14.15 | 18.52 | 1.14 | 25.8×3.53 (AS618) | 26.62 | 32.61 | 1.02 | |
| 13.64×5.33(AS311) | 14.61 | 23.90 | 1.52 | 26.34×5.33(AS319) | 27.31 | 36.60 | 1.52 | |
| 14×1.78 (AS015) | 14.73 | 17.42 | 1.14 | 26.57×3.53(AS215) | 27.38 | 33.38 | 1.02 | |
| 13.87×3.53 (AS207) | 14.73 | 20.73 | 1.02 | 26.7×1.78 (AS023) | 27.43 | 30.12 | 1.14 | |
| 15.08×2.62 (AS616) | 15.29 | 19.66 | 1.14 | 26.64×2.62(AS121) | 27.46 | 31.83 | 1.14 | |
* All manufacturer's names, part numbers, and descriptions are used for reference purposes only. We do not imply that any part shown is the product of these manufacturers.
We ship worldwide via DHL, FedEx, UPS, TNT, and EMS for small orders, and by sea freight for bulk orders. Standard delivery time is 5–7 working days for small orders and 15–30 days for sea freight.
All products are carefully packaged in neutral packaging with foam protection to prevent damage during transit. Custom packaging with your branding is available for OEM orders.
We accept multiple payment methods for your convenience. For new customers, we typically require 100% advance payment for small orders. For established partnerships, we offer flexible terms including 30% deposit with balance before shipping.
