KR piston seal consists of a sliding ring made from polyurethane and an NBR rubber energizer with a square cross-section. It delivers exceptional sealing performance in both dynamic and static applications, ensures consistently low friction throughout its service life, and offers outstanding resistance to wear and extrusion.
Technical Data
Pressure: ≤ 30MPa
Speed: ≤ 0.5 m/s
Temperature: -35 °C~+110 °C
Medium: Hydraulic fluids (mineral oil based)
Materials
Sliding ring: PU 90A
Expander ring: NBR 70A
Features
Excellent sealing performance both in static and dynamic conditions.
- Can be used as single acting seal.
- Suitable for use as a single-acting seal.
- Outstanding resistance to wear and extrusion.
- Low friction during dynamic movement.
- Easy snap-fit installation onto solid pistons.
- Compact axial design for space-saving installation.
Installation Profile
Specification Table (mm)
| Name | d | D | h |
| KR | 20 | 12.5 | 3.2 |
| KR | 25 | 14 | 4.2 |
| KR | 32 | 24.5 | 3.2 |
| KR | 40 | 29 | 4.2 |
| KR | 45 | 32 | 6.3 |
| KR | 50 | 39 | 4.2 |
| KR | 55 | 39.5 | 6.3 |
| KR | 60 | 49 | 4.2 |
| KR | 63 | 52 | 4.2 |
| KR | 63 | 50 | 6.3 |
| KR | 65 | 52 | 6.3 |
| KR | 70 | 59 | 4.2 |
| KR | 70 | 57 | 6.3 |
| KR | 75 | 62 | 6.3 |
| KR | 80 | 64.5 | 6.3 |
| KR | 85 | 71.5 | 6.3 |
| KR | 90 | 74.5 | 6.3 |
| KR | 95 | 79.5 | 6.3 |
| KR | 100 | 84.5 | 6.3 |
| KR | 100 | 79 | 8.1 |
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