PN# 012071  SKU#13049  Air Brake Compression Fitting, Male Elbow. Material: Brass. Pipe Size: 1/4″. Tube Size: 1/4″. Designed for use with nylon or copper air brake tubing. DOT compliant. Fittings meet SAE J246 requirements. All brass construction. 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 sea1.5ashout. Can be reused up to five times. Provides excellent thread lubrication to prevent galling.