Back Up Ring

High-performance nylon back-up ring for excavator hydraulic systems. Features 3mm thickness, dimensional stability, and excellent wear resistance. Compatible with various chemicals and suitable for high-pressure applications with O-rings. Available in multiple sizes from 35mm to 150mm for various industrial sealing requirements.

Nylon split hydraulic U-cup seals designed to prevent O-ring extrusion in high-pressure systems up to 5,000 PSI. Temperature range -67°F to +212°F, speed rating 3 FT/SEC. Available in multiple sizes from 35×50×3mm to 150×170×3mm for various industrial applications. Enhances O-ring performance in demanding hydraulic environments.

High-performance TPU-coated backup ring measuring 125×119×3mm with excellent temperature resistance. Made from durable nylon material in green color, compatible with PC, SK, EX, ZAXIS and other hydraulic equipment. Custom sizes available from professional manufacturer with 10+ years experience.

High-performance green nylon backup ring seal designed for hydraulic cylinders in excavators. Features high temperature resistance, available in standard sizes 80-170mm with custom options. Compatible with PC, SK, EX, ZAXIS, ZX, R, HD, DH, MS, SH, EC, E series equipment. Manufacturer direct pricing with quality assurance.

Professional-grade green nylon back up rings for hydraulic seals with high temperature resistance. Available in standard N4W sizes from 80-170mm diameter and 2.5-3mm thickness. Custom dimensions and OEM designs accepted. Factory-direct pricing with quality assurance from experienced manufacturer.

Professional N4W back up seals for hydraulic cylinders featuring 150x144x3mm standard size, high-temperature resistant Nylon OM material, and green color. Available in custom sizes with compatibility for PC, SK, EX, ZAXIS, ZX, R, HD, DH, MS, SH, EC, E series. Manufacturer direct with 10+ years experience and quality assurance.

High-temperature resistant OM Nylon backup ring gasket designed for hydraulic cylinder sealing applications. Available in standard sizes 115×109×3mm with custom options. Features factory pricing, quality testing, and compatibility with multiple hydraulic systems including PC, SK, EX, ZAXIS series.

High-performance TPU N4W backup ring seals designed for hydraulic cylinders in construction applications. Features high temperature resistance, available in orange and green colors, with standard sizes from 80-170mm. Custom sizing available with factory-direct pricing and over 10 years manufacturing expertise.

Professional TPU 2024 N4W back up ring with 95×90×2.5mm dimensions, featuring high temperature resistance and OM Nylon construction. Compatible with PC, SK, EX, ZAXIS, and other industrial machinery. Factory direct pricing with custom sizing options available for machinery repair and maintenance applications.

High-performance N4W backup rings made from POM and NYLON materials for hydraulic cylinder applications. Features oil resistance, heat tolerance from -35°C to +120°C, and compatibility with major equipment brands including Komatsu, Hitachi, and VOLVO. Available in standard sizes 80-170mm with custom options.

High-temperature resistant N4W rubber seal gasket made from durable nylon material. Features 2.5-3mm thickness range, green color coding, and compatibility with PC, SK, EX, ZAXIS hydraulic systems. Custom sizes available with 30% deposit. Professional manufacturer with 10+ years experience.

Engineered for extreme pressure and temperature, this PTFE back up ring ensures leak-proof durability in excavators and heavy machinery. ISO-compliant, corrosion-resistant, and customizable. Ideal for mining, construction, and industrial hydraulic applications.

Made from high-purity PTFE, these backup rings resist acids, heat up to 260°C, and cold down to -180°C. Non-stick, non-flammable, and biologically inert. Available in 4mm to 400mm sizes with custom options. Ideal for oil seals and construction works.

High temperature resistant TPU N4W nylon back up ring for hydraulic seals. Standard size 120x114x3mm with green color. Custom sizes available. Factory direct price with durable performance for machinery repair.

High-performance N4W TPU backup ring in green, size 115x109x3mm. Offers excellent temperature resistance and durability for hydraulic sealing. Custom sizes available with factory direct pricing and free samples for stock items.

High temperature resistant nylon backup ring seal for YOUCHANG construction equipment. Custom sizes accepted, factory price, and strict quality testing. Durable and efficient for hydraulic cylinder seal kits.

Professional-grade back up rings made from Nylon/PTFE with copper powder reinforcement. Features 3mm thickness for high-pressure applications, prevents O-ring extrusion, and withstands temperature fluctuations. Available in multiple sizes for hydraulic systems with reciprocating and rotating movements.

Professional bronze filled PTFE backup ring measuring 40mm × 50mm × 3mm for industrial machinery. Provides superior extrusion resistance, protects O-rings in high-pressure systems up to 40mm diameter, and compensates for temperature fluctuations. Ideal for reciprocating and rotating movements in machinery repair shops with over 10 years manufacturing expertise.

PTFE bronze filled BRT nylon back-up rings with U cup seals provide superior extrusion resistance for hydraulic systems. These 3mm thick rings feature chemical corrosion resistance, high temperature tolerance, and self-lubricating properties. Available in multiple sizes from 30mm to 180mm, they enable O-Rings to perform in high-pressure applications with reciprocating movements and temperature fluctuations.

PTFE bronze filled back up rings with 3mm thickness provide essential support for O-Rings in hydraulic systems. These extrusion-resistant components enable higher pressure applications, compensate for temperature fluctuations, and extend seal life. Available in sizes from 30×34×3mm to 165×180×3mm for various industrial requirements.