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 5985-01-390-4989
NSN 4140-01-444-4464
NSN 5910-00-407-1094
NSN 5998-01-054-9527
NSN 6620-00-980-6258
NSN 6645-01-258-0370
NSN 5998-01-325-8696
NSN 5999-00-763-5601
NSN 6135-01-339-8064
NSN 6645-00-175-8156
NSN 5950-01-449-6356
NSN 5985-00-101-0698