CAT backup ring 095-1787 for hydraulic sealing

Excavator backup ring for piston and rod seals

Anti-extrusion ring 095-1787 for CAT equipment

NBR/PTFE backup ring for excavator cylinders

095-1787 ring-backup for static seal support

Backup Ring 095-1787 for CAT Hydraulic Seals YNF16817

095-1787 backup ring for supporting CAT excavator hydraulic oil seals.

OEM part 095-1787, used in CAT hydraulic sealing systems
Functions as anti-extrusion support for O-rings and lip seals
Available in NBR, PTFE, or nylon materials
Designed to enhance seal stability under high pressure
Essential component in cylinder and valve repair kits

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Backup Ring Description

The YNF16817 backup ring, equivalent to OEM part number 095-1787, is a critical component in high-pressure hydraulic sealing assemblies, particularly for CAT excavators. Positioned next to O-rings or seals in gland grooves, it prevents extrusion into clearance gaps when the system is pressurized. Manufactured from durable NBR, PTFE, or engineering plastic materials, it significantly extends seal life and ensures stable performance under heavy load. Commonly used in hydraulic cylinders, control valves, and pumps, it’s ideal for B2B buyers managing fleet maintenance and seal kit inventories.

Backup Ring Technical Sheet

Item	Details
YNF Code	YNF16817
OEM Part Number	095-1787
Product Name	Backup Ring (Ring-Backup)
Material	NBR / PTFE / Nylon
Application Area	Hydraulic anti-extrusion support
Working Pressure	Up to 45 MPa (with O-ring pairing)
Temperature Resistance	-30°C to +200°C
Compatibility	CAT, Komatsu, Volvo, Hitachi
Used With	O-rings, U-cups, lip seals
MOQ	100 pcs
Origin	China
Packaging	Individual bag / bulk carton
Shipping Options	Express, Air, Sea
Payment Terms	T/T, Western Union, L/C

Backup Ring Applications

Application Component	Description
Hydraulic Cylinders	Prevents seal extrusion in piston/rod glands
Pump Assemblies	Used behind shaft seals under high load
Valve Housings	Supports O-rings in high-pressure ports
Repair Kits	Included in seal kits for CAT excavators
B2B Wholesalers	Suitable for inventory in sealing product lines

CAT Backup Ring 095-1787 Detail Display

FAQs

Related Knowledge:

Backup rings are essential in preventing O-ring failure due to extrusion at high system pressures.
Common materials include PTFE for chemical resistance and NBR for cost-effective sealing.
Installing backup rings improves sealing reliability and reduces hydraulic downtime.

Related Products:

O-ring 095-1601 for CAT cylinders
Cylinder seal kits for CAT 320
Piston rod wear rings and guide bushings
Excavator oil seals and dust wipers

FAQs:

Q: Can backup rings be reused?
A: Not recommended. Always replace during O-ring replacement to ensure integrity.
Q: Is this backup ring compatible with standard groove designs?
A: Yes, it conforms to standard CAT gland specifications.

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Looking to upgrade seal performance in CAT hydraulic systems? YNF16817 (095-1787) backup ring delivers anti-extrusion strength and extends O-ring lifespan under extreme pressure. Ideal for professional maintenance providers and wholesale seal distributors. Request your quote now to access bulk pricing and expert service.

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Backup Ring 095-1787 for CAT Hydraulic Seals YNF16817

Backup Ring Description

Backup Ring Technical Sheet

Backup Ring Applications

CAT Backup Ring 095-1787 Detail Display

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