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 5905-01-362-0702
NSN 7035-00-421-8710
NSN 6240-00-669-6652
NSN 6685-01-433-7958
NSN 5930-01-274-6390
NSN 5960-01-439-3731
NSN 5996-01-470-1404
NSN 5965-01-129-5499
NSN 5945-01-660-0718
NSN 5930-01-168-4124
NSN 2925-00-139-8309
NSN 5998-01-067-7951