PN#017844  SKU#18658  Nylon Air Brake Tube Fitting, 45° Elbow. Material: Brass. Pipe Size: 1/4″. Tube Size:1/4″. Designed for use with nylon air brake tubing. DOT Compliant. Meets SAE J246 requirements. Brass construction with internal stainless steel tube supports. Pipe thread sealant featured. This pre-applied sealant offers several benefits: Provides no-leak assembly instantly saves application time and expense. Will not contaminate systems like tape shredding or liquid sealant washout. Can be reused up to five times. Provides excellent thread.