SSP FITTINGS CORP presents a robust and reliable tube fitting engineered for instrumentation and process tubing systems. Designed for 0.25 Inch Tube OD to 1/4-18 Male NPT this straight bulkhead fitting offers high performance with its durable stainless steel construction.
Duolok tube fittings ensure leak-proof connections thanks to their double ferrule design which adapts to variations in tubing materials and wall thickness. The fittings are machined from premium brass bar stock and precision forgings adhering to ASTM standards.
The fitting is gaugeable for proper pull-up during initial installation and it maintains interchangeability with Swagelok brand tube fittings. Suitable for use with copper tubing it supports a wide range of applications with a reliable pressure rating based on the maximum allowable working pressures of the tubing.
Duolok tube fittings function across an extensive range of operating temperatures though elevated temperatures may reduce the system's maximum working pressure. For elevated temperature applications contact us for expert assistance.
Supplier Part Number: ISSD4BMC4
Loading related products…
Specifications
A
2.10
Brand
Ssp Fittings Corp
Brand
SSP Fittings Corp
Pack Size
1.00
UOM
EA
Hole Dia.
0.45
Max Panel Thickness
0.40
Supplier Part Number
ISSD4BMC4
T
0.25
Thread 1
1/4-18
Alternate Part Numbers
Alternate Part NumberC1JB21
Product Weight
0.11 lbs
Similar Products
Model Number
T
Thread 1
A
Max Panel Thickness
Hole Dia.
Price
Action
ISSD4BMC4Stainless Duolok To Male NPT Bulkhead
0.25
1/4-18
2.1
0.4
0.45
Product Questions & Answers (1)
Question by: Judy G on Mar 15, 2026, 7:36 AM
Will this fitting work with copper tubing like I use on my home hydraulic connections?
Answer by: Customer Support on Mar 16, 2026, 1:11 PM
These Duolok fittings are indeed suitable for use with copper tubing, making them versatile for different applications.