Is the Straight Stainless Steel Bulkhead Fitting for Metric Tubing, M774L compatible with aggressive chemical media and high-corrosion environments?

Yes. The Straight Stainless Steel Bulkhead Fitting for Metric Tubing, M774L is compatible with aggressive chemical media and high‑corrosion environments. Made from premium AISI 316 stainless steel, the LET-LOK® design provides exceptional corrosion resistance and chemical compatibility, making it suitable for demanding sectors such as chemical, petrochemical, pharmaceutical, energy, nuclear, and process engineering. Its robust construction ensures long‑term durability and safety under extreme operating conditions; however, final suitability should be confirmed against the specific chemical media, concentrations, temperatures, and the tube’s OD and wall thickness, which determine the working pressure and overall system performance.

Can the Straight Stainless Steel Bulkhead Fitting for Metric Tubing, M774L withstand high temperatures and extreme pressure variations in industrial systems?

Straight Stainless Steel Bulkhead Fitting for Metric Tubing, M774L: Yes — the M774L is engineered to withstand high temperatures and significant pressure variations typical of demanding industrial systems. Made from AISI 316 stainless steel, it offers excellent resistance to heat and aggressive chemicals, ensuring structural integrity under extreme operating conditions. However, the maximum working pressure is not a fixed value of the fitting alone; it is determined by the specific metric tube’s outer diameter and wall thickness used in the installation. For safe specification, consult the tube pressure ratings at your operating temperature and match them to the M774L installation guidelines and industry standards. When selected and installed per manufacturer recommendations, the M774L provides durable, reliable performance in chemical, petrochemical, pharmaceutical, energy, nuclear, and process-engineering applications.

Coupling bulkhead straight for tubes metric, steel stainless, M774L

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel

A LET-LOK® straight bulkhead fitting for connecting metric tubes, Intended mainly for industry chemical, petrochemical, pharmaceutical, power generation, nuclear power plants and process engineering. The permissible pressure working specifies on the basis of diameter outer and wall thickness wall tubes (details in the attachment). Material: steel AISI 316.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HM-LM774L-03-SS	Fitting bulkhead for a tube 3 mm, SS	-	-	In stock	Enquiry
HM-LM774L-04-SS	Fitting bulkhead for a tube 4 mm, SS	-	-	In stock	Enquiry
HM-LM774L-06-SS	Fitting bulkhead for a tube 6 mm, SS	-	-	In stock	Enquiry
HM-LM774L-08-SS	Fitting bulkhead for a tube 8 mm, SS	-	-	In stock	Enquiry
HM-LM774L-10-SS	Fitting bulkhead for a tube 10 mm, SS	-	-	In stock	Enquiry
HM-LM774L-12-SS	Fitting bulkhead for a tube 12 mm, SS	-	-	In stock	Enquiry
HM-LM774L-14-SS	Fitting bulkhead for a tube 14 mm, SS	-	-	In stock	Enquiry
HM-LM774L-15-SS	Fitting bulkhead for a tube 15 mm, SS	-	-	In stock	Enquiry
HM-LM774L-16-SS	Fitting bulkhead for a tube 16 mm, SS	-	-	In stock	Enquiry
HM-LM774L-18-SS	Fitting bulkhead for a tube 18 mm, SS	-	-	In stock	Enquiry
HM-LM774L-20-SS	Fitting bulkhead for a tube 20 mm, SS	-	-	In stock	Enquiry
HM-LM774L-25-SS	Fitting bulkhead for a tube 25 mm, SS	-	-	In stock	Enquiry

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A LET-LOK® straight bulkhead fitting for connecting metric tubes, Intended mainly for industry chemical, petrochemical, pharmaceutical, power generation, nuclear power plants and process engineering. The permissible pressure working specifies on the basis of diameter outer and wall thickness wall tubes (details in the attachment). Material: steel AISI 316.