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 5920-01-653-8738
NSN 6145-01-010-4665
NSN 5990-00-838-1082
NSN 5998-01-200-0641
NSN 5990-01-095-8866
NSN 5945-01-097-0173
NSN 2925-01-580-8072
NSN 5945-01-420-0996
NSN 5895-01-411-5585
NSN 6145-01-099-2682
NSN 5925-01-042-2812
NSN 5945-01-341-9424