Rod-piston seal K21 48x63x10 NBR

Rod–piston seal K21, dimensions 48×63×10 mm, made of NBR rubber. Designed for hydraulic and pneumatic cylinders as a double-acting seal. The K21 profile by Kastas can be installed either on the piston or on the rod, ensuring sealing performance in both directions.

Design features:

• symmetrical profile – installation on rod or piston,

• double-acting sealing lip,

• secure groove fit,

• suitable for reciprocating motion.

Technical details (Kastas catalogue):

• Inside diameter: 48 mm (≈ 1.89 inch)

• Outside diameter: 63 mm (≈ 2.48 inch)

• Height: 10 mm (≈ 0.39 inch)

• Material: NBR (nitrile rubber)

• Operating temperature: –30°C to +105°C

• Max. pressure: 150 bar

• Max. speed: up to 0.5 m/s

Material – NBR (Nitrile rubber):

• good resistance to mineral oils, greases and fuels,

• elasticity over a wide temperature range,

• wear resistance in dynamic applications.