What is the maximum allowable working pressure for the 90° Stainless Steel Elbow Fitting for Metric Tubing, M765L, based on tubing OD and wall thickness?

The maximum allowable working pressure for the 90° Stainless Steel Elbow Fitting for Metric Tubing, M765L is determined by the tubing outer diameter (OD) and wall thickness—therefore it does not have a single fixed value for the fitting itself. To obtain the correct allowable working pressure, consult the tubing pressure-rating charts or calculations for the specific metric tubing OD and wall thickness you are using (material properties, temperature, and applicable design code also affect the rating). In practice, select the tubing OD and wall thickness, then use the tubing manufacturer’s allowable working pressure table or the relevant standard (e.g., ISO/EN or ASME formulas) to determine the maximum allowable working pressure for that tube; the M765L fitting is rated to match those tubing-based values when installed per LET-LOK® installation instructions.

How does the 90° Stainless Steel Elbow Fitting for Metric Tubing, M765L, perform in corrosive or high-temperature environments compared to other AISI 316 fittings?

The 90° Stainless Steel Elbow Fitting for Metric Tubing, M765L, manufactured from premium AISI 316, performs at or above typical AISI 316 fittings in corrosive and high-temperature environments. AISI 316 alloy offers excellent resistance to chloride-induced corrosion and many chemical media common in chemical processing, petrochemicals, pharmaceuticals, energy and nuclear applications; using that base material means the M765L shares those inherent corrosion-resistant properties. What distinguishes the M765L is its LET-LOK® design and precision manufacture: leak-tight connections reduce exposure of mating surfaces to corrosive fluids and limit crevice corrosion risk. Its robust construction and compatibility with specified tubing OD and wall thickness ensure the allowable working pressure is maintained even under thermally stressful conditions, delivering durable mechanical integrity at elevated temperatures within the normal service range of AISI 316. In short, the M765L performs comparably to other high-quality AISI 316 fittings in corrosion and heat resistance but offers improved operational reliability and reduced leak/crevice risk thanks to LET-LOK® engineering and precision tolerances, making it a strong choice for harsh and safety-critical environments.

90° Stainless Steel Elbow Fitting for Metric Tubing, M765L

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel

The 90° LET-LOK® fitting for metric tubing is a high-performance solution designed to meet the demanding requirements of industries such as chemical processing, petrochemicals, pharmaceuticals, energy, nuclear power, and advanced process engineering. Manufactured from premium AISI 316 stainless steel, it ensures exceptional resistance to corrosion, durability under extreme conditions, and long-lasting reliability in critical applications. The allowable working pressure is precisely defined by the tubing’s outer diameter and wall thickness, enabling safe and efficient operation even in highly challenging environments. Engineered for precision and leak-tight connections, this fitting guarantees optimal performance in systems where safety, efficiency, and compliance with stringent industry standards are paramount. Its robust design and proven LET-LOK® technology make it the preferred choice for professionals seeking secure, maintenance-friendly, and cost-effective solutions for complex installations.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HM-LM765L-03-SS	90° connector for 3 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-04-SS	90° connector for 4 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-06-SS	90° connector for 6 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-08-SS	90° connector for 8 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-10-SS	90° connector for 10 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-12-SS	90° connector for 12 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-14-SS	90° connector for 14 mm tube, SS	-	-	In stock	Enquiry
HM-LM765L-15-SS	90° connector for 15 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-16-SS	90° connector for 16 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-18-SS	90° connector for 18 mm tube, SS	-	-	In stock	Enquiry
HM-LM765L-20-SS	90° connector for 20 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-22-SS	90° connector for 22 mm tube, SS	-	-	In stock	Enquiry
HM-LM765L-25-SS	90° connector for 25 mm tube, SS	-	-	In stock	Enquiry
HM-LM765L-38-SS	90° connector for 38 mm tubing, SS	-	-	In stock	Enquiry
HM-LM765L-50-SS	90° connector for 50 mm tube, SS	-	-	In stock	Enquiry

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The 90° LET-LOK® fitting for metric tubing is a high-performance solution designed to meet the demanding requirements of industries such as chemical processing, petrochemicals, pharmaceuticals, energy, nuclear power, and advanced process engineering. Manufactured from premium AISI 316 stainless steel, it ensures exceptional resistance to corrosion, durability under extreme conditions, and long-lasting reliability in critical applications. The allowable working pressure is precisely defined by the tubing’s outer diameter and wall thickness, enabling safe and efficient operation even in highly challenging environments. Engineered for precision and leak-tight connections, this fitting guarantees optimal performance in systems where safety, efficiency, and compliance with stringent industry standards are paramount. Its robust design and proven LET-LOK® technology make it the preferred choice for professionals seeking secure, maintenance-friendly, and cost-effective solutions for complex installations.