4x Rubber Cylinder Oil Sealing Rings — 20 x 30 x 7 mm Key benefits Restores reliable sealing and smooth operation: these rubber cylinder oil seals prevent oil leaks and maintain consistent pressure in your changer system. Keeps contaminants out: effective barrier against dust, dirt and debris, reducing wear on internal components and lowering maintenance needs. Durable, replaceable parts: made from resilient rubber for long-lasting performance and easy on-site replacement when seals wear. What this product does Provides oil and dust sealing for cylinder/changer assemblies to maintain performance and prevent contamination-related failures. Fits many common changers thanks to the compact 20 x 30 x 7 mm dimensions, making it a straightforward spare part for routine maintenance. Specifications Quantity: 4 large cylinder oil sealing rings Material: Rubber Size: 20 x 30 x 7 mm (packaged as four identical seals) Why customers need it Prevents downtime by replacing worn seals before leaks or contamination cause malfunctions. Simple, cost-effective maintenance part that extends the service life of changers and related pneumatic or hydraulic components. Designed for a secure fit and consistent sealing performance across a range of compatible changer models. Typical applications Replacing worn seals during preventive maintenance on automatic changers or cylinder assemblies. Restoring smooth operation of a tool or cartridge changer that has begun to leak or perform inconsistently. Protecting under-hood or shop equipment in dusty or dirty environments where ingress of particles accelerates component wear. Installation and use Intended as a direct replacement part; remove the old seal, clean the sealing surfaces, and press the new rubber ring into place. No special tools required for most installations; follow your equipment manufacturer’s service instructions for safe replacement. Reliable, straightforward replacement seals to keep your changer systems running smoothly and free from contamination.