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 6145-01-634-0388
NSN 5985-01-502-6841
NSN 6685-00-252-9427
NSN 6685-00-333-9651
NSN 5855-01-007-9541
NSN 5965-00-706-7005
NSN 5990-00-495-2859
NSN 5945-00-518-8907
NSN 5855-01-091-9966
NSN 5945-01-022-2299
NSN 2925-01-274-8576
NSN 5835-01-345-0814