M25988-1-338 PACKING

Part# 04-03827
MFR Model# M25988-1-338
Fuel CapMfg P/NP/NTypeSize
Shaw 431/531M25988/1-33804-03827FlourosiliconeLarge O-ring


We offer both Nitrile and Flourosilicone O-rings. Flourosilicone commonly has a longer service life, and is sometimes preferred over the nitrile units.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.



Michael K Verified Purchase

M25988-1-338 PACKING

September 21, 2022

White B Verified Purchase

M25988-1-338 PACKING

August 30, 2022

Just what I ordered and installed perfectly.

Scott C
January 20, 2021

As advertised. Nice fit and seal properly.

Zac N
January 4, 2021

Great improvement over rubber o-rings.

Paul R
December 1, 2020

Great O rings fit perfect

Jms H
August 1, 2019

Fast and no problems

Fred R
July 29, 2019

Nice quality, good tight fit, should hold up longer in the Phoenix heat and dry weather.

Eric O
July 9, 2018

Quality material, and a good price.

Cindy M
August 22, 2017


Please note, Aircraft Spruce'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 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: What gasket is needed for a Cessna vented fuel cap? Thanks

06-00987 is the part number for the Cessna fuel cap gasket.

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