Mosmatic Swivel – 54.663 – 3/8" NPTF x G3/8" M

The Mosmatic 54.663 Swivel is a professional-grade 360° rotary union engineered for high-pressure systems up to 5000 psi. With a 3/8" NPTF female inlet and a G3/8" male outlet, this model is ideal for setups requiring compatibility between NPT and BSPP (G-thread) components.

This swivel is widely used in pressure washer lances, reels, and rotating arms, where its sealed bearing system, nickel-plated brass housing, and stainless steel internal parts ensure smooth, long-lasting rotation—even under continuous use in harsh environments.

Applications

• Pressure washer guns and reels

• Car wash systems and bays

• Hose booms and rotating connections

• Surface cleaners and spray wands

• Industrial fluid systems with mixed-thread connections

Features

• Full 360° rotation

• Rated up to 5000 psi

• 3/8" NPTF (F) inlet x G3/8" (M) outlet

• Lightweight and compact (2.56 oz)

• Nickel-plated brass body with stainless steel internals

• Reduces hose wear and prevents kinks

• Maintenance-free, sealed bearing design

Part Number: 54.663
Max Pressure: 5000 psi
G1 (Female Inlet): 3/8" NPTF
G2 (Male Outlet): G3/8" M
Nominal Width (NW): 3/8"
Spanner Size (SW1): 0.63
Length L1: 2.87"
Total Length (L2): 4.29"
Rotating Section (L3): 0.47"
Diameter D1: 2.17"
Diameter D2: 0.79
Weight: 2.56 oz
Body Material: Nickel-plated brass
Internal Material: Stainless steel
Seal Type: O-ring (NBR or Viton depending on application)
Temperature: Up to 250°F