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 5895-00-912-1677
NSN 5925-01-627-5810
NSN 6645-01-422-1374
NSN 5985-00-309-6315
NSN 6220-00-730-5798
NSN 6110-01-098-4803
NSN 6685-01-049-2963
NSN 6620-00-930-5680
NSN 5950-01-164-8331
NSN 5945-00-781-9401
NSN 6135-01-645-4653
NSN 5905-01-600-0179