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 6150-01-188-7317
NSN 5985-00-221-5566
NSN 6110-01-516-2300
NSN 7035-01-578-6909
NSN 5895-00-777-3504
NSN 7035-01-399-5354
NSN 6645-00-930-9356
NSN 5915-01-446-2342
NSN 5935-01-036-8120
NSN 6610-01-572-6625
NSN 4140-01-529-8216
NSN 5996-01-005-8930