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 6145-01-584-5405
NSN 5930-01-286-2233
NSN 5985-01-011-1265
NSN 5985-00-132-6897
NSN 4140-00-853-3889
NSN 6685-00-560-7210
NSN 5905-00-443-9915
NSN 5945-00-563-1653
NSN 6685-01-256-4618
NSN 5960-01-116-4576
NSN 5998-01-657-0639
NSN 6320-00-400-8042