221-9963: Valve Backup Ring

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Backup Rings

A Valve Backup Ring prevents seal extrusion under high pressure, supports O-rings or seals, ensures reliability, and enhances system performance.

Brand: Cat

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221-9963: Valve Backup Ring

A Valve Backup Ring prevents seal extrusion under high pressure, supports O-rings or seals, ensures reliability, and enhances system performance.

Brand: Cat

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Frequently bought together

221-9963

212-6027

8L-2786

View All Parts

Frequently bought together

221-9963: Valve Backup Ring

212-6027: Piston Pump Backup Ring

8L-2786: 2.21 x 16.36mm 75A FKM O-Ring

033-6033: 1.78 x 12.42mm 75A FKM O-Ring

317-0808: 1.78 x 10.82mm 75A FKM O-Ring

214-7568: STOR O-Ring Seal (SAE 9/16-18)

Diagram

Description

Specifications

Compatible Models

Parts diagram for 221-9963

Specifications for part number 221-9963

Units of Measure

Metric

Material Description:

PTFE provides superior performance in Air, Engine Oil, Diesel Fuel and Coolant applications, but is sensitive to installation damage and debris. It works well at very high temperatures.

Cross Section Width (in):

0.05

Notes:

Dimensions and Material Descriptions provided for reference only. Color may differ from image.

Cross Section Height (mm):

1.4

Cross Section Width (mm):

1.2

Material:

PTFE - Polytetrafluoroethylene,Polytetrafluoroethylene (PTFE) Plastic

Inside Diameter (mm):

11.6

Inside Diameter (in):

0.46

Cross Section Height (in):

0.05

Compatible Models for part number 221-9963

PUMPER

SPF743

UNDERGROUND ART TRUCK

AD55B

TRUCK ENGINE

C9 C-9 C13

WHEEL TRACTOR

623H 621K OEM 621H 627H 631K 637K

INTEGRATED TOOLCARRIER

IT62G II IT62H IT38G II IT38H

WHEEL TRACTOR-SCRAPER

627K 631K 627 623 621 637 627K LRC 632 631 637K 623K LRC 623K 621K

ENGINE

C13B

LOAD HAUL DUMP

R2900 XE R1700 XE R1700

SOIL COMPACTOR

825H 825C 825G II

WHEEL DOZER

854 824H 824C 854G 854K 824G II 844H

MOTOR GRADER

16H 14H

LANDFILL COMPACTOR

826G II 836H 826C

WHEEL LOADER

980 XE 966F II 962M Z 962 982XE 980K HLG 966 972H 972K 972M 972 972L 950M Z 966 GC 986 966XE 966K XE 980 982 950G II 988GC 980GC 962H 986H 950H 950K 962L 986K 962K 950M 950L 962M 990H 993 972G II 972M XE 938G II 993K 980G II 966M XE 980XE 988H 962G II 980C 980F 980H 980G 992G 980L 980K 992K 972XE 980M 938H 938K 966F 966H 966L 966K 966M 966G II 950 982M

WHEEL SKIDDER

535D 545D 555D 525D

TRANSMISSION

TR16-C7.1

MINING EXCAVATOR

5130 5230

INDUSTRIAL ENGINE

C18 C11 C13 C15 C9.3

WHEEL SCRAPER

637K

Key

Factory Fit

This part is designed to fit your Cat equipment based on the manufacturer’s specifications.

Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.

Remanufactured

Non-Returnable

Kit

Replaced

Remanufactured

Non-Returnable

Kit

Replaced