MS35769-24 GASKET

Part# AN900-17
MFR Model# MS35769-24
Part No.MS35769ID


AN900 (MS35769) annular copper-asbestos gaskets (crush washers) are suitable for temperatures up to 500 F. and pressures up to 200 PSI. Ring width is 1/8"; thickness is 3/32.
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Perfect crush washers for my 1950 DeSoto oil drain plug. Very good service and lightning fast shipping.

Ron C
May 20, 2021

The real deal! Real crush washers! Size was exactly as needed for intended purpose and these crushable washers did the job. Solved a longstanding problem where a previously used fiber washer became brittle with use and failed. Have bought washers sold as crush washers before but they did not appear to be anything other than regular washers that were (supposedly) made out of pure copper.

Ray D
May 7, 2021

They are so shiny!

Michael Z
April 30, 2021

Exactly as advertised and shipped promptly Thx

John B
April 26, 2021

Perfect fitment

Ron C
April 20, 2021

Perfect fit for a flathead 6 oil pan drain

Ron C
April 20, 2021

Just what I needed

Matthew P
April 17, 2021

got it quickly

Floyd K
January 4, 2021

Good quality crush washer

Blaine W
December 18, 2020

Fast delivery, great service as always

Scott C
December 9, 2020


Please note,'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. 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: How is the diameter of crush washers determined?

The ID listed in the chart is the inside diameter.

Q: I am looking for a ROTAX 250-010 GASKET RING C 12X18 but you have AN900 (MS35769) COPPER GASKETS - CRUSH WASHERS - I cant tell what size to get.

The Rotax gasket must be ordered from Use Part # 15-08260 to locate it on their website.

Q: which size is used for the rotax 912uls oil drain plug?

The drain plug size is m12x1.5, part number 15-09891(241-785). The closest crush gasket we would have is AN900-8 (1/2".)

Q: Is there a torque value for the AN900 washers?

Up to 200 lbs square inch.