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 6150-00-809-9114
NSN 5950-01-130-3939
NSN 6150-00-763-7220
NSN 6620-01-364-0195
NSN 4140-00-803-1088
NSN 7035-00-834-2090
NSN 5945-01-345-4443
NSN 6610-00-036-9878
NSN 5930-01-111-8791
NSN 6135-01-026-9960
NSN 6645-00-837-2267
NSN 5835-01-449-7511