Description: Backup Rings prevent seal extrusion in high pressure applications, and may be used to protect the life of overall sealing system from pressure surges.
Attributes: Cat® Backup Rings are designed in conjunction with the elastomeric seal and mating components, and contribute significantly to the life and performance of the sealing system in high pressure applications.
Backup ring dimensions are consistently held to tight tolerances to ensure they properly bridge the seal groove and the mating surface. Materials are selected for their pressure and abrasion resistance.
Backup rings may be solid or split. Split rings are used for ease of assembly.
Cat Sealing systems protect more expensive parts from leaks and contamination. Protect your investment with Genuine Cat Seals.
Applications: Backup rings are used in high pressure static and dynamic sealing applications, such as hydraulic pumps, valves and engine systems.
Description: Backup Rings prevent seal extrusion in high pressure applications, and may be used to protect the life of overall sealing system from pressure surges.
Attributes: Cat® Backup Rings are designed in conjunction with the elastomeric seal and mating components, and contribute significantly to the life and performance of the sealing system in high pressure applications.
Backup ring dimensions are consistently held to tight tolerances to ensure they properly bridge the seal groove and the mating surface. Materials are selected for their pressure and abrasion resistance.
Backup rings may be solid or split. Split rings are used for ease of assembly.
Cat Sealing systems protect more expensive parts from leaks and contamination. Protect your investment with Genuine Cat Seals.
Applications: Backup rings are used in high pressure static and dynamic sealing applications, such as hydraulic pumps, valves and engine systems.
Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image.
Cross Section Width (mm): 3
Cross Section Height (mm): 7.3
Inside Diameter (mm): 130
Inside Diameter (in): 5.12
Cross Section Height (in): 0.29
Units of MeasureUSMetric
Cross Section Width (in): 0.12
Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image.
Cross Section Width (mm): 3
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Compatible Models
Compatible Models
Generator Set
3512
Shovel Logger
345C
Wheeled Excavator
M325C MHM325B
Load Haul Dump
R1700R2900 XER1700 XE
Front Shovel
5080385C5090B
Shear-Demolition/Scrap
S25
Excavator
349 GC340352F312D L345B II345B L325D FM345D L349349F L349F LXE349D L385C L325D FM LL325B L312D349D2 L365C L349D2MH3295352350352F-VG355365C L MH385C L MH568 FM LL374F L374D L374F345C L349E L350-A350-A L365B II330C FM345D L VG330325C FM365B L385C FS349E L VGM325D L MH349D352F XE VG330B L350 L365C330D FM385C349E345B349F345C345D352 UHD365B
Load, Haul, Dump
R1700K
Material Handler
MH3295M325D L MH
Mobile Hyd Power Unit
365C L345D
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Generator Set
3512
Warranty Information
Return Policy
Parts diagram for 087-5397
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DiagramDescriptionSpecificationsCompatible Models
Parts diagram for 087-5397
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Description for part number 087-5397
Description: Backup Rings prevent seal extrusion in high pressure applications, and may be used to protect the life of overall sealing system from pressure surges.
Attributes: Cat® Backup Rings are designed in conjunction with the elastomeric seal and mating components, and contribute significantly to the life and performance of the sealing system in high pressure applications.
Backup ring dimensions are consistently held to tight tolerances to ensure they properly bridge the seal groove and the mating surface. Materials are selected for their pressure and abrasion resistance.
Backup rings may be solid or split. Split rings are used for ease of assembly.
Cat Sealing systems protect more expensive parts from leaks and contamination. Protect your investment with Genuine Cat Seals.
Applications: Backup rings are used in high pressure static and dynamic sealing applications, such as hydraulic pumps, valves and engine systems.
Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image.
Cross Section Width (mm): 3
Cross Section Height (mm): 7.3
Inside Diameter (mm): 130
Inside Diameter (in): 5.12
Cross Section Height (in): 0.29
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Compatible Models for part number 087-5397
GENERATOR SET
3512
SHOVEL LOGGER
345C
WHEELED EXCAVATOR
M325C MH M325B
LOAD HAUL DUMP
R1700 R2900 XE R1700 XE
FRONT SHOVEL
5080 385C 5090B
SHEAR-DEMOLITION/SCRAP
S25
EXCAVATOR
349 GC 340 352F 312D L 345B II 345B L 325D FM 345D L 349 349F L 349F LXE 349D L 385C L 325D FM LL 325B L 312D 349D2 L 365C L 349D2 MH3295 352 350 352F-VG 355 365C L MH 385C L MH 568 FM LL 374F L 374D L 374F 345C L 349E L 350-A 350-A L 365B II 330C FM 345D L VG 330 325C FM 365B L 385C FS 349E L VG M325D L MH 349D 352F XE VG 330B L 350 L 365C 330D FM 385C 349E 345B 349F 345C 345D 352 UHD 365B
LOAD, HAUL, DUMP
R1700K
MATERIAL HANDLER
MH3295 M325D L MH
MOBILE HYD POWER UNIT
365C L 345D
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KeyKey
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
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