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 5855-01-586-6165
NSN 5999-01-415-5716
NSN 5925-00-233-5125
NSN 6145-00-719-7395
NSN 5945-01-501-4213
NSN 5985-01-583-6507
NSN 7035-01-507-2590
NSN 6620-00-621-4269
NSN 4140-01-652-0093
NSN 5990-00-345-8967
NSN 6220-01-610-3512
NSN 6130-01-233-1616