Is the Straight Brass Fitting with BSPT Male Thread for Metric Tubing, M768LR compatible with stainless steel and plastic tubing materials?

Yes. The Straight Brass Fitting with BSPT Male Thread for Metric Tubing, M768LR is compatible with stainless steel and many plastic tubing materials. Made from high-quality brass and designed for metric tubing, it provides durable, corrosion-resistant, leak-tight connections suitable for demanding industrial applications. Final compatibility and allowable working pressure depend on the tubing’s outer diameter, wall thickness and the specific stainless steel or plastic material (temperature, chemical exposure and hardness). Verify tubing specifications and service conditions to confirm suitability for your application.

Can the Straight Brass Fitting with BSPT Male Thread for Metric Tubing, M768LR be used with aggressive chemical media or in high-temperature environments?

Straight Brass Fitting with BSPT Male Thread for Metric Tubing, M768LR is made of high-quality brass and is designed for demanding industrial environments, including chemical, petrochemical, pharmaceutical, energy and process engineering sectors. Brass offers good corrosion resistance and durability for many common fluids and moderate temperatures. However, its suitability for aggressive chemical media or very high-temperature applications is limited: - Aggressive chemicals: Brass can be attacked by strong acids, alkalis, ammonia, chlorine compounds and certain solvents. For highly corrosive or reactive media, stainless steel or specially coated/engineered materials are typically recommended. Always verify chemical compatibility with brass for the specific fluid, concentration and temperature before use. - High temperatures: The allowable working pressure and long-term performance depend on tubing dimensions and the properties of brass; brass retains mechanical strength at moderate temperatures but degrades at elevated temperatures compared with high-temperature alloys. For sustained high-temperature service, choose materials rated for that temperature range. Recommendation: Confirm the media’s chemical compatibility with brass and the service temperature against manufacturer specifications or a chemical-compatibility chart. If uncertainty remains or the media is known to be highly corrosive or the temperature very high, select a fitting made from a more resistant material (e.g., stainless steel) or consult the supplier for an alternative.

Straight Brass Fitting with BSPT Male Thread for Metric Tubing, M768LR

All products, LET-LOK precision connectors/

Additional information

Material	B – brass (bronze)

The LET-LOK® straight coupling with external BSPT thread is a reliable and versatile connection solution designed for metric tubing, offering exceptional performance in demanding industrial environments. Manufactured from high-quality brass, it ensures durability, resistance to corrosion, and long service life, even under challenging operating conditions. This coupling is widely applied in the chemical, petrochemical, pharmaceutical, energy, nuclear power, and process engineering sectors, where safety, precision, and efficiency are critical. Its robust design guarantees secure and leak-tight connections, minimizing downtime and maintenance costs while optimizing system reliability. The allowable working pressure depends on the tubing’s outer diameter and wall thickness, enabling tailored use across a wide range of applications. Engineered for easy installation and consistent performance, the LET-LOK® straight coupling provides a cost-effective and dependable solution for industries that demand uncompromising quality and operational excellence.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HM-LM768LR-03-02-B	3 mm tube connector - GZ 1/8" BSPT, brass	-	-
HM-LM768LR-03-04-B	3 mm tube connector - GZ 1/4" BSPT, brass	-	-
HM-LM768LR-06-02-B	Connector for 6 mm tube - GZ 1/8" BSPT, brass	-	-
HM-LM768LR-06-04-B	Connector for 6 mm tube - GZ 1/4" BSPT, brass	-	-
HM-LM768LR-06-06-B	Connector for 6 mm tube - GZ 3/8" BSPT, brass	-	-
HM-LM768LR-08-06-B	Connector for 8 mm tube - GZ 3/8" BSPT, brass	-	-

The LET-LOK® straight coupling with external BSPT thread is a reliable and versatile connection solution designed for metric tubing, offering exceptional performance in demanding industrial environments. Manufactured from high-quality brass, it ensures durability, resistance to corrosion, and long service life, even under challenging operating conditions. This coupling is widely applied in the chemical, petrochemical, pharmaceutical, energy, nuclear power, and process engineering sectors, where safety, precision, and efficiency are critical. Its robust design guarantees secure and leak-tight connections, minimizing downtime and maintenance costs while optimizing system reliability. The allowable working pressure depends on the tubing’s outer diameter and wall thickness, enabling tailored use across a wide range of applications. Engineered for easy installation and consistent performance, the LET-LOK® straight coupling provides a cost-effective and dependable solution for industries that demand uncompromising quality and operational excellence.