Standard Kit Composition
A complete kit typically contains 8–12 components, divided into:
A. Rod Side (Head End)
Dust Seal
- Double-lip or scraper type
- Prevents ingress of dirt, water, and contaminants
Rod Seal
- U Seal
- YX Seal
- Step Seal
Functions:
- Prevent external leakage
Buffer Seal
- Absorbs pressure spikes up to 70–80 MPa
- Protects primary rod seal
Guide Ring / Wear Ring
- Provides support and guidance
- Prevents uneven wear
- Protects piston rod surface
O-Ring + Backup Ring
- Static sealing
- Prevents end-face leakage
B. Piston Side (Inside Cylinder Barrel)
Primary Piston Seal
Options:
- Glyd Ring
- SPGW
- KDAS
Functions:
- Bidirectional sealing
- Prevents internal leakage
Backup Ring / Anti-Extrusion Ring
Functions:
- Prevent seal extrusion under high pressure
- Prevent seal twisting
Guide Ring / Wear Ring
Functions:
- Guidance and support
- Withstands side loads
Contamination Ring
Functions:
- Allows contaminant passage
- Protects primary sealing components
