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 4140-01-462-7737
NSN 5895-01-152-2895
NSN 5996-01-230-2724
NSN 6685-01-514-9496
NSN 5920-00-180-4278
NSN 5985-00-736-6073
NSN 5999-00-111-2399
NSN 5999-00-296-8870
NSN 5915-01-475-2658
NSN 5855-01-447-3137
NSN 5945-01-431-3693
NSN 5975-01-534-4139