CTP hydraulic seals and seal kits cover the most common cylinder and pump applications across Caterpillar, Komatsu, Hitachi, and Volvo construction equipment. Seal-kit failures are the single most common hydraulic-system maintenance event — CTP provides aftermarket compounds (NBR, FKM, polyurethane) as an aftermarket alternative to OEM pricing, with cross-references documented for major OEM part numbers.
Specifications
| Compounds | NBR (standard), FKM/Viton (high-temp/aggressive fluid), polyurethane |
|---|---|
| Coverage | Cylinder seal kits, rod seals, piston seals, pump seals, valve seals |
| OEM cross-reference | Caterpillar, Komatsu, Hitachi, Volvo, Doosan documented |
| Cost vs OEM | Quoted per part number |
Common Applications
- Boom, stick, and bucket cylinder rebuilds on excavators
- Steering and dump cylinder rebuilds on dozers and loaders
- Hydraulic pump and valve seal replacement at scheduled intervals
- Repair after debris-induced contamination (dusty Central American operations)
- Mid-life hydraulic-system overhaul at 6,000-8,000 hours
When to Choose Hydraulic Seals & Components
- Routine cylinder rebuild is in scope (every 4,000-6,000 hours typical)
- Hydraulic-system contamination event requires seal replacement
- OEM seal-kit pricing has crept above the labor-vs-replace breakeven
- High-temperature or aggressive-fluid application requires FKM/Viton (CTP carries this)
Product Photos
Manufacturer photography from our distribution catalog. Click any photo for a larger view.
Parts in this Category
24 of 700 aftermarket parts shown · ranked by availability + brand strength.Browse all →
CTP-1028112
CYLINDER 1028112 — TK711
View Part →CTP-1080801
CYLINDER 1080801 — D5R LGP
View Part →CTP-1094703
CYLINDER 1094703 — D11N
View Part →CTP-1124296
CYLINDER AS 1124296 — 931B
View Part →CTP-1124297
CYLINDER AS 1124297 — 931C II
View Part →CTP-1156429
CYLINDER 1156429 — 318B
View Part →CTP-1225077
CYLINDER 1225077 — 315B FM
View Part →CTP-1362441
CYLINDER 1362441 — 345B II
View Part →CTP-1453030
CYLINDER 1453030 — 315C
View Part →CTP-1686686
CYLINDER 1686686 — 311C
View Part →CTP-1764887
CYLINDER 1764887 — 322C
View Part →CTP-1793008
CYLINDER 1793008 — 329D
View Part →CTP-1793044
CYLINDER 1793044 — 330C
View Part →CTP-1R6322
CYLINDER 1R6322 — 311B
View Part →CTP-1S5331
CYLINDER 1S5331 — 215B
View Part →CTP-2394375
CYLINDER 2394375 — 324D
View Part →CTP-2M0125
CYLINDER 2M0125 — 571G
View Part →CTP-3147923
CYLINDER 3147923 — D6H
View Part →CTP-3623563
CYLINDER 3623563 — D10R
View Part →CTP-3W0643
CYLINDER 3W0643 — D5HTSK II
View Part →CTP-3W7515
CYLINDER AS 3W7515 — 953B
View Part →CTP-5M7306
CYLINDER 5M7306 — 583H
View Part →CTP-5M7701
CYLINDER 5M7701 — 594H
View Part →CTP-7I7712
CYLINDER 7I7712 — 322B
View Part →Brands
Industries
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