Is the 90Â° fitting for metric tubing, stainless steel, M765L compatible with tubing wall thicknesses specified for LET-LOKÂ® allowable working pressures?

Yes. The 90Â° fitting for metric tubing, stainless steel, M765L Format is compatible with tubing wall thicknesses specified for LET-LOKÂ® allowable working pressures, provided the tubingâs outer diameter and wall thickness fall within the ranges used to determine LET-LOKÂ® allowable working pressure (as detailed in the attachment). The fitting is designed for metric tubing and made of AISI 316 stainless steel, and the allowable working pressure for LET-LOKÂ® assemblies is explicitly based on tubing OD and wall thickness. Ensure you match the tubing dimensions and wall thickness to the LET-LOKÂ® pressure tables in the attachment to confirm compatibility for your required pressure rating.

Can the 90Â° fitting for metric tubing, stainless steel, M765L be used with tubing made from materials other than AISI 316?

The 90Â° fitting for metric tubing, stainless steel, M765L Format is specified as made from AISI 316 stainless steel. Its allowable working pressure is calculated from tubing outer diameter and wall thickness (see attachment). Using tubing made from other materials is possible only if those materials meet the same mechanical, chemical and temperature performance as assumed for AISI 316 in the pressure ratings and compatibility analysis. Before substitution, verify: 1) the alternative materialâs strength and pressure rating for the given OD and wall thickness; 2) chemical and corrosion compatibility with process media and environment; 3) temperature limits and creep/embrittlement behavior; 4) dimensional tolerances and sealing compatibility with LET-LOKÂ® geometry. If any of these differ, you must recalculate allowable working pressure or consult the manufacturer/engineering for approval.

Does the 90Â° fitting for metric tubing, stainless steel, M765L require specific installation torque values for safe use?

The 90Â° fitting for metric tubing, stainless steel, M765L Format does require correct installation practice, but the provided description does not specify exact installation torque values. Safe use depends primarily on selecting fittings matched to the tubing outer diameter and wall thickness (which determine allowable working pressure) and on proper assembly per manufacturer instructions. Recommended actions: - Consult the manufacturerâs installation instructions or technical datasheet for the 90Â° fitting for metric tubing, stainless steel, M765L Format to obtain any specified torque values for nuts, ferrules or bolts. - If no torque is specified, follow standard LET-LOKÂ® assembly practice: hand-tighten then apply incremental turns with a wrench as recommended for LET-LOKÂ® fittings (typically a specified fraction of a turn) while ensuring proper alignment and ferrule engagement. - Use calibrated torque tools when the manufacturer provides torque values; this ensures leak-tight joints without overstressing the AISI 316 components or the tubing. - Verify compatibility with the tubing OD and wall thickness per the allowable working pressure table; undersized or thin-walled tubing may require different handling. - After installation, perform pressure/leak testing at recommended test pressures before putting the system into service. - For critical applications (chemical, pharmaceutical, nuclear, energy), follow applicable industry standards and, when in doubt, contact the manufacturer or a qualified engineer for installation torque guidance. Without the manufacturerâs specific torque data in the supplied description, assume that correct assembly practice and verification testing are required rather than relying on a generic torque figure.

90° fitting for metric tubing, stainless steel, M765L

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel

90° fitting type LET-LOK® for metric tubing intended mainly for the chemical, petrochemical, pharmaceutical, energy, nuclear power, and process engineering industries. The allowable working pressure is determined based on the outer diameter and wall thickness of the tubing (details in the attachment). Material: AISI 316 steel.

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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90° fitting type LET-LOK® for metric tubing intended mainly for the chemical, petrochemical, pharmaceutical, energy, nuclear power, and process engineering industries. The allowable working pressure is determined based on the outer diameter and wall thickness of the tubing (details in the attachment). Material: AISI 316 steel.