Description: O-Rings are mainly used in static application as both axial or radial seals to prevent leakage and contamination.
Attributes: Cat® O-Rings are made from materials that are matched to the fluids, temperatures and pressures found in Cat® engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat® O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation.
Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.
With over 2500 O-Rings in different sizes and materials, Cat® O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.
Cat® sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat seal to protect your investment.
Applications: O-Rings are used in a wide variety of applications throughout the entire Cat® product line.
Description: O-Rings are mainly used in static application as both axial or radial seals to prevent leakage and contamination.
Attributes: Cat® O-Rings are made from materials that are matched to the fluids, temperatures and pressures found in Cat® engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat® O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation.
Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.
With over 2500 O-Rings in different sizes and materials, Cat® O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.
Cat® sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat seal to protect your investment.
Applications: O-Rings are used in a wide variety of applications throughout the entire Cat® product line.
330D L329D L385C340D2 L336D L323D LN330 MHPU365C L350MHPU349E L HVG325D L325C325D336D330D2345D345C349D L336E HVG330D324D LN330C385C L349D2323D L345C L
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Generator Set
350835123512B
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Parts diagram for 121-7138
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Parts diagram for 121-7138
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Description for part number 121-7138
Description: O-Rings are mainly used in static application as both axial or radial seals to prevent leakage and contamination.
Attributes: Cat® O-Rings are made from materials that are matched to the fluids, temperatures and pressures found in Cat® engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat® O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation.
Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.
With over 2500 O-Rings in different sizes and materials, Cat® O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.
Cat® sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat seal to protect your investment.
Applications: O-Rings are used in a wide variety of applications throughout the entire Cat® product line.
311D LRR 320C L 345B II 316 GC 349D L 325B L 336D2 LXE M315F FM538 320D LN 312B 336D 312C 324D 312D MH3295 320D3 GC 315D L 316 GX M317F 333 GC 320D2 320D3 336D2 L 326D L 340D2 L FM548 312F GC 311B 313D2 GC 323D 390D 318B N 320D L M318F 330D2 320D FM RR 350-A 315 GC 325C L MH3040 322B 322C 390D L 336D LN 319D LN 340MHPU 325C FM 3101 323D LN 385C FS 330B L 330D FM 345B 345C 345D 326 GC 349 GC 336 MHPU 312B L 548 320D2 GC 385C L 320D2 FM 325D L 320D GC 326D2 349D2 319D L 317 315 323D2 L 558 313 320GX 320D LRR 365C L MH 315B 315C 330C L 336D L 374D L 336D2 318D L 312D2 L 312C L 568 FM 313D2-GC 313D2 320B LU 326GC 350-A L FM558 314E CR 320D FM OTHER 320B LL 330C FM 313D2 LGP 320 GX 538 325B 349D FM568 324D L 350 L 330D L 350 OEM 330GC 320 GC 325C 325D 313D 352 UHD 312D2 312D2 GC 340 312D L 313 GX 322B L 345B L 349 330D MH 336 GC 345 328D LCR 329D LN 313 GC 329D L 349D2 L 352 350 355 M325D MH 319D 330D LN 318D2 L 320C FM 319C 568 FM LL 318F L 320 326 345C L 330 GC 325 318 GC 323 318C 318B 323D SA 320D RR 345D L VG 323D3 323D S 330 336D2 GC 340D L 323D L 330D2 L 335 336 333 311F LRR 323D2 329D 326D2 L 314F CR 385C 323 GX 318D2 345D L 336D2 XE 313F GC 330C LN 320B 320C 320D 323 GC 323GC 314E LCR 315B L 365C L 395 325D MH 312 GX 313F LGC 312 GC 385C L MH 320B FM LL 320B N 320B L 315F LCR 329D2 L 322C FM 315B FM L 330B 330C 330D 320D2 L 324D LN 374 329D2 317 GC 336D2 L XE 330C MH 365B L 345C MH M325D L MH 365C 320B U 345 GC 365B
VIBRATORY COMPACTOR
CB-536D
MOBILE HYD POWER UNIT
330D L 329D L 385C 340D2 L 336D L 323D LN 330 MHPU 365C L 350MHPU 349E L HVG 325D L 325C 325D 336D 330D2 345D 345C 349D L 336E HVG 330D 324D LN 330C 385C L 349D2 323D L 345C L
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Related parts
270-1540: Air Conditioning Seal Kit (78A HNBR)
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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
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Replaced
Remanufactured
Non-Returnable
Kit
Replaced
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