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 6620-01-327-7273
NSN 5905-01-139-5341
NSN 5998-01-115-0135
NSN 6645-01-541-9114
NSN 5985-01-173-2021
NSN 2925-01-218-5556
NSN 5996-01-473-2183
NSN 6610-01-053-6781
NSN 6220-01-563-2150
NSN 5996-01-440-3861
NSN 5935-01-026-0251
NSN 6110-01-328-8292