Warthog Brass Captive Sleeve Adapter — Tube OD × Female NPT
The Warthog Brass Captive Sleeve Adapter connects tubing to a female NPT port with a leak-tight compression seal. The sleeve (ferrule) is captured inside the nut, so it can't fall out or get lost during assembly — making installation faster and more reliable in tight spaces on air lines, control lines, and instrumentation runs.
Key specifications
- Material: solid brass body, nut, and captive sleeve
- Connection: tube OD compression × female NPT (FNPT)
- Compatible tubing: copper, aluminum, and thermoplastic/poly tube (use a tube insert with soft plastic tubing)
- Temperature range: approximately -65°F to +250°F
- Best suited to low- and medium-pressure connections without excessive vibration or tube movement
- Available sizes: 1/8" tube × 1/8" FNPT, 1/4" tube × 1/8" FNPT, 1/4" tube × 1/4" FNPT, 3/8" tube × 1/4" FNPT
Typical applications
Pneumatic control and signal lines, shop air drops, compressor accessory plumbing, gauges and instrumentation, and general low-pressure fluid or air connections where a serviceable, tool-friendly compression joint is preferred.
Brass captive sleeve compression adapters give you a durable, corrosion-resistant tube-to-female-NPT connection with a retained sleeve for quick, repeatable assembly — a dependable choice for air compressor and pneumatic systems.
NOTE: Actual product may be different from pictured!
Financing Options
Financing Options
We offer Financing Through Many Different Avenues:
- Affirm is great for smaller purchases. You can do this during checkout.
- Clicklease is a great option for Instant decisions up to 25k. NO Hard credit pull. No Time in Business Required. More information can be found out about it here: https://www.clicklease.com/partner/warthog-air-compressor-store
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