Type A - without thread coating
Type PRB - with thread coating (polyamide all round coating)
GN 252.5 Blanking Sealing Plug, Stainless Steel.
These blanking sealing plugs, with optional micro encapsulation, are ideal for closing bore holes. Manufactured from stainles steel, they are suitable for use in clean room environments, such as found in the food and medical industries, and in processing and packaging.
The thread locking PRB (polyamide all round coating) acts as a clamping lock which prevents the locking screw from being inadvertently being loosened and becoming detached.
Stainless Steel AISI 303.