Is the HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD suitable for continuous operation at 6 bar and temperatures from -20Â°C to +70Â°C?

Yes. The HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD is specified for a working pressure of 6 bar and an operating temperature range from -20Â°C to +70Â°C. Its construction.aluminum body with an NBR (nitrile) seal.matches those operating conditions: NBR maintains sealing performance across that temperature span and is commonly rated for pressures at or above 6 bar in similar applications. Therefore the component is suitable for continuous operation at 6 bar and temperatures between -20Â°C and +70Â°C, provided installation, loads, and environmental factors (chemical exposure, UV, abrasion) do not exceed the material limits or manufacturerâs additional specifications.

Can the HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD withstand chemical exposure affecting the NBR seal at 6 bar and -20Â°C to +70Â°C?

HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD Format: The nut is specified with an NBR (nitrile) seal, rated for 6 bar and an operating temperature range of -20Â°C to +70Â°C. NBR offers good resistance to oils, greases and many hydrocarbons but has limited resistance to strong acids, ketones (e.g. acetone), chlorinated solvents, brake fluids, and some esters. If the chemical exposure includes oils/hydrocarbons typical in rail/industrial environments, the seal is likely acceptable at the stated pressure and temperatures. If exposure involves aggressive solvents, strong acids/alkalis, chlorinated or oxygenated solvents, or prolonged contact with chemicals known to attack NBR, the seal may degrade and failure risk increases. For a definitive assessment, identify the specific chemicals, concentrations and exposure duration and conduct compatibility checks or testing; consider alternative seal materials (e.g. FKM/EPDM) if incompatibility is found.

Does the HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD require periodic seal replacement at 6 bar and -20Â°C to +70Â°C?

No, the HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD does not require periodic seal replacement under the specified conditions, provided normal use and no damage. The product description states sealing material is NBR (nitrile rubber), working pressure 6 bar and operating temperature range â20 Â°C to +70 Â°C. all within typical limits for NBR, which maintains sealing performance in that temperature and pressure range. Routine replacement is not mandated by these parameters; replacement is recommended only if you observe leaks, mechanical damage, chemical exposure beyond NBR compatibility, excessive wear, or aging (hardening, cracking, loss of elasticity). For safety-critical or rail-industry preventive-maintenance regimes, follow your organisationâs inspection intervals and replace seals based on visual inspection, leak detection, or manufacturer/standards guidance. If operating conditions include aggressive chemicals, temperatures outside the stated range, higher pressures, or frequent dynamic loading, consider more frequent inspection and earlier replacement.

HEAVY DUTY rail nut with METRIC GW, aluminum, type NHD

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Additional information

Railway nut HEAVY DUTY with seal, with metric thread, for hook wrench. Material: aluminum. Sealing: NBR. Working pressure: 6 bar. Operating temperature: from -20°C to +70°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
ZK-NHD-130-06-A	Rail nut HD GW M130x6, aluminum	-	-	In stock	Enquiry
ZK-NHD-130-09-A	HD railway nut GW M130x9, aluminum	-	-	In stock	Enquiry
ZK-NHD-140-10-A	HD railway nut GW M140x10, aluminum	-	-	In stock	Enquiry

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Railway nut HEAVY DUTY with seal, with metric thread, for hook wrench. Material: aluminum. Sealing: NBR. Working pressure: 6 bar. Operating temperature: from -20°C to +70°C.