NOS - age unknown.

These are about .1" thick, and about 4 3/4" in diameter.

The listing is for 10 seals/o-rings.

From the Calaveras Airplane Company (a full-service airplane maintenance company) surplus old stock inventory.

It is the buyer's responsibility to determine the parts suitability for installation and airworthiness upon inspection.

Please check our listings for other aircraft parts.