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 5990-00-281-4164
NSN 5915-01-415-3100
NSN 6145-01-384-7508
NSN 5910-00-026-1205
NSN 6145-00-902-1410
NSN 6685-01-081-7522
NSN 6110-01-327-3282
NSN 6320-00-925-0558
NSN 5975-00-183-7693
NSN 5910-01-623-8435
NSN 6220-01-155-6521
NSN 6130-01-003-4884