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 6150-01-511-5219
NSN 5925-00-872-3028
NSN 6320-00-853-1920
NSN 5990-01-287-9447
NSN 5998-01-076-4690
NSN 5985-01-076-0151
NSN 5945-01-203-3256
NSN 2925-00-536-4574
NSN 6130-01-335-4180
NSN 5895-00-637-2658
NSN 5920-01-113-2900
NSN 6240-00-963-5964