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.
Warning:This product can expose you to chemicals including Tetrafluoroethylene, which is known to the State of California to cause cancer, and Perfluorooctanoic acid (PFOA), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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.
Warning:This product can expose you to chemicals including Tetrafluoroethylene, which is known to the State of California to cause cancer, and Perfluorooctanoic acid (PFOA), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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.
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Warning:This product can expose you to chemicals including Tetrafluoroethylene, which is known to the State of California to cause cancer, and Perfluorooctanoic acid (PFOA), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 491-4176
Units of Measure
USMetric
Seal Type: Backup Ring
Material: PTFE,Teflon Plastic
Inside Diameter (mm): 15.08
Cross Section Width (mm): 2.18
Cross Section Thickness (mm): 1.25
Inside Diameter (in): 0.594
Cross Section Width (in): 0.086
Cross Section Thickness (in): 0.049
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Compatible Models for part number 491-4176
GENERATOR SET
3512B
TRACK FELLER BUNCHER
TK1051
OEM MOB HYD PWR UNIT
336MHPU
FORESTRY PRODUCTS
FM528 LL 538 548 558 568
WHEELED EXCAVATOR
M325C MH MH3040 W330B M325B
HEX BASED SPL SOLUTION
352F OEM 320E 330F OEM 330D2
LOG LOADR FORST MACH
558
EXCAVATOR
336E LN 336E LH 349F LXE 349D L 325B L 336D2 LXE 323F SA FM538 320D LN 336D 324D 336E 324E 336F 333 GC 320D2 336D2 L 326D L 340D2 L FM548 335F 323F 336F XE 323D 320D L 349E L 330D2 336E LNH 325C L MH3040 322C 336D LN 340MHPU 325C FM 323D LN 340F L UHD 349E L VG 324E LN 352F XE VG 330B L 321C 345C 345D 326 GC 336 MHPU 320E L 548 320D2 GC 349F L 325D L 320D GC 326D2 349D2 352F-VG 323D2 L 558 320D LRR 330C L 326F L 336D L 323F OEM 336D2 320F L 336F L XE 568 FM 323E LN 326GC FM558 320D FM 330C FM 326F 320 GX 538 349D 330F LN FM568 324D L 330D L 330GC 336E L 320 GC 325C 349E 325D 336E H 320E RR 325F 340 352F 340F 322B L 336 GC 328D LCR 329D LN 329D L 340F L LRE 349D2 L 336F LN XE 320E LRR 325F LCR 323F LN 330D LN 320C FM 324E L 336F L 568 FM LL 320 326 330 GC 325 323 318C 329E L 323D SA 320D RR 345D L VG 330 336D2 GC 340D L 323D L 330D2 L 335 336 333 323D2 329D 330F L 329E 326D2 L 323 GX 345D L 336F LNXE 329F L 336D2 XE 335F LCR 330C LN 320C 320D 320E 323 GC 323GC 323E L 336F LN 329E LN 321D LCR 323E SA 320E LN 330F 329D2 L 322C FM 330D 320D2 L 324D LN 329D2 323F L 336D2 L XE 330C MH 326F LN
MATERIAL HANDLER
MH3032 MH3040
MOBILE HYD POWER UNIT
330D L 329D L 336FMHPU 329E 340D2 L 336D L 330 MHPU 349E L HVG 325D L 325D 336E 323F OEM 336E HVG 330D 330C 330FMHPU
FOREST PRODUCTS
OTHER
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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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