BRAKE SEALS (P/N 3872-720p) - New Surplus

The 3872-720p is an elastomeric brake seal for aircraft wheel brake assemblies. This seal retains hydraulic pressure in the brake caliper piston interface, preventing fluid leakage during braking operations. Material selection depends on system fluid compatibility—use nitrile rubber (MS28775) for petroleum-based hydraulic fluids or EPDM for phosphate-ester fluids.

Sized to SAE AS568 O-ring standards common in aerospace applications. Install lubricated per the aircraft maintenance manual and component illustrated parts catalog for proper seating and pressure retention.

What is the BRAKE SEALS (P/N 3872-720p)?

The 3872-720p is an elastomeric brake seal for aircraft wheel brake assemblies. This seal retains hydraulic pressure in the brake caliper piston interface, preventing fluid leakage during braking operations.

What material is the 3872-720p made from?

Aircraft seals and O-rings are manufactured from various elastomers including nitrile (Buna-N), fluorocarbon (Viton), silicone, and PTFE depending on the application. The BRAKE SEALS meets aviation specifications for its intended use. Contact us for specific material data.

Can I order the 3872-720p in bulk quantities?

Yes, we stock seals and gaskets in quantity and offer bulk pricing. Submit a Request for Quote (RFQ) for volume orders, or call (904) 998-9101 for immediate quantity availability on the 3872-720p.

What is the shelf life of the 3872-720p?

Elastomeric seals have manufacturer-specified shelf lives that vary by material and storage conditions. We follow industry standards for cure date tracking and proper climate-controlled storage. Contact us for shelf life details on the 3872-720p.