A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 7035-01-569-0291
NSN 2925-01-016-0876
NSN 5915-00-230-7567
NSN 5910-01-333-4896
NSN 6320-01-094-2634
NSN 5920-00-653-0019
NSN 5855-01-644-3271
NSN 5985-00-187-8985
NSN 7035-01-281-3642
NSN 5985-01-065-8272
NSN 5925-00-734-1441
NSN 4140-00-253-1801