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 aircraft models does the 3872-720p fit?

Part number 3872-720p is listed in multiple aircraft Illustrated Parts Catalogs. Always verify the BRAKE SEALS against your specific aircraft model's IPC and Type Certificate Data Sheet before ordering. Currently available in: New Surplus.

Does the 3872-720p include an 8130-3 tag and maintenance records?

Documentation varies by condition. Overhauled and repaired landing gear components include 8130-3 airworthiness tags. New surplus includes manufacturer documentation. Contact us for trace documentation on the specific condition you need.

Do you offer volume pricing for fleet orders of the 3872-720p?

Yes, we offer quantity discounts for fleet maintenance orders. Submit a Request for Quote (RFQ) specifying your required quantity, or call (904) 998-9101 to discuss fleet pricing for the BRAKE SEALS.