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 5999-01-553-8827
NSN 7035-01-449-1846
NSN 6130-00-238-9406
NSN 5950-01-573-6434
NSN 6150-00-202-9150
NSN 6150-01-605-5144
NSN 5855-01-400-1590
NSN 5990-01-555-6616
NSN 5910-01-231-9628
NSN 6645-00-963-6354
NSN 6645-01-093-5015
NSN 5905-01-634-0595