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Seamless 316 Stainless Steel Tubing, 1.25 Inch OD, 0.12 Inch Thick, 1.01 Inch ID

Burst Pressure 14400	Brand Marmon/Keystone	Brand Marmon - Keystone	Pack Size 12.00	UOM FT	I.D. 1.01 in	Inside Area 0.80	Maximum Working Pressure 2400	O.D. 1.25 in	Rated Flow 36.70	Rated Flow 36.7	Safety Factor 6:1	Supplier Part Number 1-1/4.120-SS	Wall Thickness 0.12	Alternate Part Numbers Alternate Part Number C1AE35	Product Weight 1.91 lbs

Product Questions & Answers 2

Product Questions & Answers

got a job that calls for 1-1/4 stainless tube, is this the one with a 1.01 id and .120 wall or am i mixin it up

Question by: Chad J on Dec 18, 2025, 2:55 PM

The key dimensions on this tubing are 1.25 inch outside diameter, 0.12 inch wall thickness, and 1.01 inch inside diameter. It is seamless bright annealed 316 stainless made to ASTM A269 B90.

Answer by: Customer Support on Dec 20, 2025, 6:31 AM

what's the max working pressure on this tubing? got a system running around 2000 psi and want to make sure theres enough headroom

Question by: Rex W on Mar 8, 2026, 8:42 AM

At 2,000 psi you'd be well within the rated limit. The working pressure on this tubing is 2,400 psi, and that's already calculated using a 6:1 safety factor to account for hydraulic shock and normal mechanical strain. Burst pressure is rated at 14,400 psi, so there's a solid margin built in. For a system sitting around 2,000 psi with typical shock loads, this fits comfortably.

Answer by: Customer Support on Mar 9, 2026, 6:47 PM

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5/8.065-SS	0.5625 in	0.065	0.4325 in	0.1923	9	2600	15600	6:1
1-1/4.120-SS	1.25 in	0.12	1.01 in	0.8008	36.7	2400	14400	6:1
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3/4.095-SS	0.75 in	0.095	0.56 in	0.2462	11.1	3167	19000	6:1
3/8.035-SS	0.375 in	0.035	0.305 in	0.0731	3.4	2333	14000	6:1