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 5915-01-545-2232
NSN 6150-01-125-1435
NSN 5855-01-085-5354
NSN 5920-01-394-5003
NSN 5945-01-100-4479
NSN 6685-01-263-5479
NSN 7035-00-179-3924
NSN 5945-01-167-8498
NSN 5930-00-518-1642
NSN 5925-00-875-1296
NSN 6685-01-260-9156
NSN 2925-01-470-5534