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 5975-01-268-0687
NSN 6610-01-339-1595
NSN 6645-00-248-5434
NSN 5895-00-093-6590
NSN 6105-01-479-5054
NSN 2925-01-197-7864
NSN 6145-00-596-8447
NSN 6610-01-204-9146
NSN 6650-01-441-1258
NSN 6645-00-960-6594
NSN 6150-00-573-4160
NSN 5925-01-260-9384