Scraper seal A9

NBRmetalurethane

Product overview
The Scraper A9 is a one-piece wiper for hydraulic and pneumatic cylinders. It incorporates a vulcanized metal supporting ring to improve dimensional stability and simplify groove design and installation. Available in NBR, FKM or TPU; typical hardness 90–95 Shore A (material dependent).

Available materials and typical uses

• NBR: general hydraulic and pneumatic systems.
• FKM: applications requiring enhanced chemical and temperature resistance.
• TPU: mobile hydraulics with heavy contamination and abrasive particles.

Fields of application

• static
• dynamic
• single acting
• double acting
• linear
• rotating (inactive)
• oscillating

Main use
Wiping and protection of rod and cylinder internals in hydraulic and pneumatic cylinders to prevent contamination ingress.

Materials
Elastomers (NBR, FKM, TPU) with a vulcanized metal supporting ring.

Technical values
Typical material limits:

• NBR: Temperature -40°C to +100°C; Max sliding speed up to 1 m/s; Pressure: application dependent.
• FKM: Temperature -20°C to +200°C; Max sliding speed up to 1 m/s; Pressure: application dependent.
• TPU: Temperature -40°C to +100°C; Max sliding speed up to 1 m/s; Pressure: application dependent.

Maximum temperature, speed and pressure values are not simultaneously applicable; final limits depend on material and media.

Technical specifications

• Designation: Scraper A9
• Design: one-piece wiper with vulcanized metal supporting ring
• Materials: NBR, FKM, TPU and metal supporting ring
• Typical hardness: 90–95 Shore A (material dependent)
• Main applications: hydraulic and pneumatic cylinders
• Fields of application: static, dynamic, single acting, double acting, linear, oscillating (rotating inactive)
• Typical temperature ranges: NBR -40°C / +100°C; FKM -20°C / +200°C; TPU -40°C / +100°C
• Max sliding speed: up to 1 m/s (material dependent)
• Pressure: dependent on material and media (not specified)