Parker Vibra-Lok Straight Compression Fitting Brass 3/8 Inch x 1/8 NPT

Parker Vibra-Lok Straight Compression Fitting Brass 3/8 Inch x 1/8 NPT

Standard compression fittings fail when engines vibrate. Parker Vibra-Lok fittings are built for exactly that environment – the elastomeric sleeve cushions the tubing and allows it to flex inside the fitting body, maintaining a positive seal under constant vibration, shock, and tube movement on motorcycles and custom builds.

Key Features

• Straight configuration for in-line tube-to-pipe connections without directional routing
• Vibra-Lok sleeve eliminates micro-leaks caused by metal-on-metal compression contact under vibration
• Brass body for corrosion resistance in oil, fuel, and coolant applications
• Tube-to-pipe style – compression inlet with male NPT outlet

Technical Specifications

• Body Material: Brass
• Shape: Straight
• Connection 1 (Compression): 3/8-inch tube OD
• Connection 2 (Male Pipe): 1/8-27 NPT
• Style: Tube to Pipe

Fitment Notes

• Use with 3/8-inch OD tubing – tubing OD must match exactly for the Vibra-Lok sleeve to seal correctly
• 1/8-27 NPT male outlet threads into 1/8-inch NPT female ports on engine cases, petcocks, and fittings
• No thread sealant required on compression end – apply thread sealant to NPT male threads per standard practice
• Replace the Vibra-Lok sleeve (60VL-6 Buna-N or 60VLV-6 Viton) if sealing performance deteriorates