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 5960-01-212-8118
NSN 5990-01-340-3575
NSN 5990-01-131-9055
NSN 7035-01-026-0117
NSN 2925-01-178-0063
NSN 5910-00-553-9000
NSN 5998-01-433-4718
NSN 6610-01-384-1587
NSN 6620-00-168-0308
NSN 5965-01-300-9664
NSN 6685-01-193-6586
NSN 5910-01-455-4903