nVent Hoffman - Hoffman ASPB05075NM Hole Seal for 1/2", 22.5mm, and 3/4" Conduit, Non Metallic

Designed for use in corrosive environments to seal extra pushbutton holes, conduit openings and knockout openings against dust, dirt, oil and water. These hole seals are suitable for sealing enclosure openings in industries such as petroleum and chemical processing, wastewater processing, pulp and paper, outdoor monitoring and any other industry exposed to harsh environments. Features: Innovative 3-in-1 self-centering design reduces inventory requirements; 3 models cover 9 common industry cutouts ranging from 1/2 inch (13mm) to 2-1/2 inch (64mm); Non-metallic construction provides superior corrosion resistance for reliability in harsh environments; UV stabilized; ideal for direct sunlight (avoids fiberbloom associated with fiberglass); Chemically resistant to a broad range of chemicals; Durable and impact resistant; resists cracking; Sold in quantities of 2 per catalog number; Cost-effective alternative to stainless steel; Polyester material has a UL 94 rating of 5VA; Easy to install; no tools required; Thread and nut are constructed of non-glass-filled polyester; Oil-resistant gasket included