Peter Huber Metal Hose Connection Tubing, NW12 M16x1, 300cm

The Peter Huber 6255 is an ultra-high-temperature insulated metal hose designed for demanding thermoregulation tasks in research and industrial laboratories. Featuring a nominal width of NW12 and standard M16x1 threaded connections, this flexible tubing is engineered to handle extreme thermal environments, supporting a maximum working temperature of up to 350°C. This makes it an essential accessory for high-temperature applications such as pilot plants, reactors, and distillation units where standard hoses would fail. At 300cm in length, it provides significant reach and flexibility for complex laboratory setups. The hose is constructed from premium-grade stainless steel (1.4404) and features advanced multi-layer insulation with a smooth silicone outer jacket and protective end caps to ensure maximum heat retention and user safety.

Key Features:

• Brand: Peter Huber
• Connection Type: NW12 with M16x1 threading (Sleeve nut according to DIN 3870)
• Length: 300 cm (3 meters)
• Temperature Range: Extreme versatility from -100°C to 350°C
• Material: High-quality stainless steel (1.4404) for superior chemical and thermal resistance
• Insulation: Special multi-layer thermal insulation with a smooth, wipe-clean silicone cover
• Pressure Rating: Maximum operating pressure of 16 bar at 20°C (10 bar at 350°C)
• Dimensions: 33 mm outside diameter with a minimum bending radius of 120 mm
• Safety: Flame-resistant construction with a UL94-HB fire rating and protective end caps

This Huber metal hose is specifically optimized to prevent heat loss and protect personnel from the extreme surface temperatures of the internal bellows. The M16x1 fittings are compatible with the KISS, Ministat, and Compatible Control (CC) series, providing a vibration-resistant and leak-free connection. Its robust construction ensures long-term reliability even when exposed to high-temperature silicone oils and rapid thermal cycling.

Frequently Asked Questions

1. Why is this hose rated for 350°C while other NW12 hoses are only rated for 200°C?
The 6255 model utilizes upgraded stainless steel bellows and specialized high-temperature insulation materials that maintain their structural integrity at extreme heat levels where standard insulated hoses might degrade.

2. Can I use this hose for cryogenic applications?
Yes, this hose is rated down to -100°C. The multi-layer insulation is highly effective at preventing ice build-up on the exterior of the hose during sub-zero operations.

3. What is the benefit of the silicone outer cover?
The silicone jacket provides a smooth, non-porous surface that is easy to clean. It also adds an extra layer of protection against accidental contact with the hot metal hose and resists chemical splashes.

4. Does the 3-meter length cause significant pressure drop?
While any longer hose increases resistance, the NW12 (12mm) internal diameter is designed to balance flexibility with adequate flow for most small-to-medium Huber circulators.

5. Are the end caps replaceable?
Yes, Huber offers replacement silicone end caps if the original ones become worn or damaged over time, ensuring the insulation remains sealed and effective.