Wilwood 130-2579 – Square O-Ring Kit | 1.125" Piston

Wilwood – Square O-Ring Kit | 1.125" Piston

The Wilwood Square O-Ring Kit is a caliper square-ring seal kit designed for Wilwood brake calipers using 1.125" pistons. Manufactured from 210M material, these seals are engineered for high-temperature racing brake environments, providing reliable piston sealing and proper retraction.

This 4-pack kit is ideal for routine maintenance, caliper rebuilds, or preventative service to keep braking performance consistent and reliable.

Features & Benefits

• Square-ring seal design – Ensures proper piston sealing and retraction
• 210M material – Built to withstand racing brake heat and fluid exposure
• Direct replacement fit – Designed for Wilwood calipers with 1.125" pistons
• Service-ready kit – Ideal for rebuilds and routine maintenance
• Wilwood OEM quality – Precision manufactured for consistent performance

Product Specifications

• Seal Type: Square-Ring
• Material: 210M
• Quantity: 4 seals
• Piston Size Supported: 1.125"
• Seal Thickness: 0.099"