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 5925-01-368-3064
NSN 5998-01-650-8194
NSN 5985-01-555-8768
NSN 6220-00-433-4499
NSN 5950-01-582-8295
NSN 5945-00-954-5888
NSN 5930-00-792-6562
NSN 6150-01-027-7067
NSN 6220-01-398-1933
NSN 2925-01-295-2017
NSN 6645-01-394-5149
NSN 5990-01-644-3095