Is the 90° Brass Elbow Fitting for Metric Tubing, M765L compatible with stainless steel tubing and what are the pressure limits for different OD/wall thicknesses?

Yes. The 90° Brass Elbow Fitting for Metric Tubing, M765L is compatible with stainless steel tubing: its LET-LOK® brass construction is designed to form secure, leak‑tight connections with metal tubing, including stainless steel, when the correct metric OD and wall thickness are used. Allowable working pressure is determined by the tubing outer diameter (OD) and wall thickness; higher wall thicknesses and smaller ODs yield higher pressure ratings. Exact pressure limits must be taken from the tubing pressure charts or manufacturer tables for the specific stainless steel tube material and dimensions used, but in practice the fitting supports typical process pressures encountered in chemical, petrochemical, pharmaceutical and energy applications when paired with appropriately rated stainless steel metric tubing. For a precise pressure rating for a given OD/wall thickness, consult the tubing manufacturer’s allowable working pressure data or the fitting supplier’s technical tables.

Can the 90° Brass Elbow Fitting for Metric Tubing, M765L be used with aggressive chemicals or high-temperature fluids, and how do temperature and media affect its allowable working pressure?

The 90° Brass Elbow Fitting for Metric Tubing, M765L is made of high‑quality brass and offers good general corrosion resistance and durability, making it suitable for many industrial applications (chemical processing, petrochemicals, pharmaceuticals, energy, nuclear power, etc.). However, its compatibility with aggressive chemicals and high‑temperature fluids is limited by the material properties of brass and must be evaluated case‑by‑case. Strong acids, alkalis, ammonia, chloride‑bearing media and some organic solvents can cause dezincification, stress corrosion or accelerated corrosion of brass; elevated temperatures typically accelerate these effects and may degrade sealing components. For aggressive or high‑temperature media, verify chemical compatibility of brass and any elastomers used, or consider alternative materials (e.g., stainless steel, special alloys). Allowable working pressure for the 90° Brass Elbow Fitting for Metric Tubing, M765L is determined primarily by the tubing’s outer diameter and wall thickness. Temperature and the media in contact affect allowable working pressure: as temperature rises or as corrosive/weakening media attack the fitting or tubing, the safe working pressure decreases. Always consult manufacturer pressure‑temperature charts and chemical compatibility data for the specific tubing and fitting materials, apply appropriate safety factors, and follow applicable codes/standards when sizing for high temperature or aggressive media.

90° Brass Elbow Fitting for Metric Tubing, M765L

All products, LET-LOK precision connectors/

Additional information

Material	B – brass (bronze)

The 90° LET-LOK® fitting for metric tubing is a reliable solution designed to meet the demanding requirements of industries such as chemical processing, petrochemicals, pharmaceuticals, energy, nuclear power, and advanced process engineering. Manufactured from high-quality brass, it ensures durability, corrosion resistance, and long-lasting performance even in challenging operating environments. The fitting provides secure, leak-tight connections that enhance system safety and efficiency, making it an excellent choice for critical applications where precision and reliability are essential. The allowable working pressure depends on the tubing’s outer diameter and wall thickness, enabling tailored use across a wide range of installations. With its robust construction and proven LET-LOK® technology, this 90° fitting guarantees optimal flow control, easy assembly, and reduced maintenance, supporting seamless operation in both standard and high-demand systems. It is an ideal component for engineers and operators seeking dependable performance, simplified integration, and maximum operational safety.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
HM-LM765L-06-B	90° connector for 6 mm tubing, brass	-	-	In stock	0 €		Enquiry

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The 90° LET-LOK® fitting for metric tubing is a reliable solution designed to meet the demanding requirements of industries such as chemical processing, petrochemicals, pharmaceuticals, energy, nuclear power, and advanced process engineering. Manufactured from high-quality brass, it ensures durability, corrosion resistance, and long-lasting performance even in challenging operating environments. The fitting provides secure, leak-tight connections that enhance system safety and efficiency, making it an excellent choice for critical applications where precision and reliability are essential. The allowable working pressure depends on the tubing’s outer diameter and wall thickness, enabling tailored use across a wide range of installations. With its robust construction and proven LET-LOK® technology, this 90° fitting guarantees optimal flow control, easy assembly, and reduced maintenance, supporting seamless operation in both standard and high-demand systems. It is an ideal component for engineers and operators seeking dependable performance, simplified integration, and maximum operational safety.