The secondary sealing lip located behind the primary sealing lip improves stability of the seal in the gland. The unique profile of the NBR energizer ensures the primary sealing lips maintain contact under low or no pressure situations while ensuring proper sealing at higher pressures.
The Hallite 621 also incorporates an acetyl anti-extrusion ring to withstand side loads and extreme pressure peaks even with the extrusion gaps.
WR, 6 X 3/4 Wear Ring NYL
RB, 5 3/4 X 6.340 X 0.248 Buffer NBR
AN wipers are ideal for light duty and pneumatic applications. Its main purpose is to prevent dirt and contaminants from entering the hydraulic or pneumatic systems.
AN wipers will retrofit into glands prescribed in MS-33675 for corresponding dash numbers of MS-28776.