Plastic NPT Locknuts with Flange Plastic Locknuts with Flange Flanged plastic locknuts offer the advantage of a larger contact surface: this in turn means better seal, correction of possible irregularities of the cutout. Sealing quality can be improved by means of an additional sealing washer, mounted between the gland and the panel. Available in NPT, Metric and Pg thread. PF (Gas, or ISO) thread upon request. Features and specifications: ? Operating Temperature: -20 to 100°C (permanent), -30 to 150°C (intermittent) ? Standard colours: black (similar to RAL9005) and light grey (similar to RAL7035) ? Other colours: dark grey (similar to RAL7001), red ? (similar to RAL3020), blue ? (similar to RAL5015), white ? (similar to RAL9003); upon request only; (? = metric only) ? Material: Polyamide 6 with 30% fiberglass