Square O-Ring Kit 1.00in 4pk

The Square O-Ring Kit 1.00in 4pk from Wilwood is designed for use in brake system assembly and maintenance. This kit is particularly useful for mechanics working on master cylinders, caliper pistons, and wheel cylinders. Quality o-ring replacement kits are essential for ensuring proper sealing and functionality in automotive applications.

These square-profile o-rings feature a unique design that provides a more rigid sealing surface compared to standard round seals. The flat sides and sharp corners help resist deformation under pressure and thermal cycling. Made from durable elastomer material, they are compatible with DOT brake fluid and can withstand repeated pressure cycles without permanent set or hardening.

Technicians restoring vintage vehicles or building custom street rods will find this o-ring kit valuable for ensuring proper assembly and future servicing. The four-pack provides redundancy for shops performing multiple seal replacements or maintaining a spare kit. Always verify bore dimensions against your specific application to ensure compatibility.