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O-RING AN6227B-27 MS28775-222

$3.35/Piece
Part# AN6227B-27
MFR Model# MS28775-222
PNMS EquivalentWidthIDOD
AN6227B-27MS28775-2221/81-1/21-3/4

Overview

O-rings give effective sealing over wide ranges of pressure, temperature, and movement, with the advantage of sealing pressure in both directions and reducing friction and wear on moving parts. The use of O-rings as gaskets or static seals permits metal-to-metal contact and allows almost unlimited pressures under extreme vibration.

All O-rings should be lubricated before installation and constant lubrication should be provided for running seals to avoid excessive wear. Avoid sharp edges, threads, and cross-drilled ports over or through which rings must be installed. AN6227B and AN6230B O-rings are manufactured to Spec. MIL-P 25732 for use in hydraulic systems using MIL-0-5606 hydraulic oils. MS28775 O-rings meet Spec. MIL-P- 5510A and are suitable for MIL-0-5606 hydraulic fluid at 160 F.

Reviews

Grant M Verified Purchase

O-RING AN6227B-27 MS28775-222

September 2, 2022

Very happy I could not find the correct order number but spruce provided it--perfect

Bill R Verified Purchase

O-RING AN6227B-27 MS28775-222

April 7, 2022

The part arrived quickly, was in excellent condition, and was the correct dimensions required for the job.

Nancy E Verified Purchase

O-RING AN6227B-27 MS28775-222

April 6, 2022

Jeff A Verified Purchase

O-RING AN6227B-27 MS28775-222

April 6, 2022

Mil-Spec part... it was called out in the drawing and fit fine.

Doug D Verified Purchase

O-RING AN6227B-27 MS28775-222

March 22, 2022

Grant M Verified Purchase

O-RING AN6227B-27 MS28775-222

February 26, 2022

The O-ring to fit the Cleveland brake piston for Beechcraft Debonairs and Piper Cherokees.

Blane J Verified Purchase

O-RING AN6227B-27 MS28775-222

December 29, 2021

Ive had success with this O-ring in a pitted Cleveland brake cylinder for 7 years.

Blane J Verified Purchase

O-RING AN6227B-27 MS28775-222

December 9, 2021

Fumigaciones A Verified Purchase

O-RING AN6227B-27 MS28775-222

November 9, 2021

Exact replacement fit for the Parker/Cleveland brake calipers on my A36 Bonanza. One of my calipers were showing signs of a slight leak. Replaced the leaking/old O-rings with these and no more leaks. To fully service the Cleveland caliper on an A36 Bonanza you will replace two of these O-rings. You will need 4 O-rings if you are servicing two calipers.

Scott S Verified Purchase

O-RING AN6227B-27 MS28775-222

October 26, 2021

Q&A

Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can these O rings be used in fuel cells with 100LL fuel?

These o-rings, AN6227B series, are not fuel resistant. For fuel resistant o-rings, see the MS29513 series. MS29513 are aviation fuel resistant, but not resistant to automotive fuel. Search for MS29513 on our web site to find the page with the fuel resistant o-rings.

Q: Are the O-rings Butyl rubber?

These are POLYTETRAFLUOROETHYLENE per the mil spec.

Q: What is the shelf life of these o-rings?

15 years per the cert.

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