Is the Plug tee "T" double with external thread, type R51 suitable for use with oils or only air and vacuum?

Based on the provided description, the Plug tee "T" double with external thread, type R51 is specified for vacuum and air as the working media. Materials and features: nickel-plated brass body, NBR (nitrile) sealing, working pressure up to 16 bar, temperature range â20Â°C to +80Â°C. NBR seals are generally compatible with many mineral oils and hydraulic fluids but have limitations (reduced resistance to aromatic hydrocarbons, high-temperature oils, and certain additives). Because the product description explicitly lists only vacuum and air and does not state suitability for oil, you should assume it is certified only for pneumatic use. If you plan to use oils, confirm with the manufacturer or supplier: verify chemical compatibility of NBR with the specific oil, check temperature and pressure conditions, and obtain explicit approval for oil service to avoid seal degradation, leaks, or failure.

Can Plug tee "T" double with external thread, type R51 be used with gases other than air and vacuum, such as inert or process gases?

Plug tee "T" double with external thread, type R51 is specified for vacuum and air. Its construction (nickelâplated brass, NBR sealing) and ratings (16 bar, â20Â°C to +80Â°C) mean it can generally handle many inert and dry process gases with similar chemical inertness to air, provided they do not attack brass or NBR and are used within pressure/temperature limits. Do NOT use with aggressive, oxidizing, sour (H2S), highly permeating, or plasma gases, or with gases requiring special materials (e.g., fluorinated, ammonia, chlorine) without validation. For safety and compliance, confirm chemical compatibility of gas with brass and NBR and verify certification/regulatory requirements for your application before use.

Can Plug tee "T" double with external thread, type R51 be used with corrosive or chemically aggressive media?

Plug tee "T" double with external thread, type R51 is specified for vacuum and air, with material nickel-plated brass and NBR sealing. These specifications indicate it is intended for pneumatic applications, not for corrosive or chemically aggressive media. Nickel-plated brass offers some corrosion resistance but is not universally resistant to aggressive chemicals; many acids, alkalis, chlorides and certain solvents can attack brass or strip plating. NBR seals resist oils, air and many non-polar fluids but have limited resistance to strong acids, ketones, aromatic hydrocarbons and certain aggressive chemicals. Operating temperature range (-20Â°C to +80Â°C) also constrains suitability with some reactive media. Therefore, Plug tee "T" double with external thread, type R51 should not be used with corrosive or chemically aggressive media unless the exact chemical compatibility of both the nickel-plated brass and NBR with the specific media, concentration and temperature has been verified by chemical compatibility charts or the manufacturer. For corrosive or aggressive chemicals, choose components made from materials specifically rated for those media (e.g., stainless steel grades, Hastelloy, PTFE seals) and confirm pressure and temperature limits.

Plug tee “T” double with external thread, type R51

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Additional information

Material	B – brass (bronze)

Double “T” plug connector with external thread, type R51, designed for connecting hoses and other components in pneumatic systems. Easy and quick to use for multiple assemblies without loss of sealing on the mechanical and pneumatic sides. Material: nickel-plated brass. Working pressure: 16 bar. Working medium: vacuum, air. Operating temperature: from -20°C to +80°C. Sealing: NBR.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
MW-2L51001	Double adjustable tee connector RL51 hose 4 mm, GZ M5	-	16	In stock	Enquiry
MW-2L51002	Double adjustable tee connector RL51 hose 4 mm, GZ BSP 1/8"	-	16	In stock	Enquiry
MW-2L51007	Double adjustable tee connector RL51 hose 6 mm, GZ M5	-	16	In stock	Enquiry
MW-2L51008	Double adjustable tee connector RL51 hose 6 mm, GZ BSP 1/8"	-	16	In stock	Enquiry
MW-2L51009	Double adjustable tee connector RL51 hose 6 mm, GZ BSP 1/4"	-	16	In stock	Enquiry
MW-2L51010	Double adjustable tee connector RL51 hose 8 mm, GZ BSP 1/8"	-	16	In stock	Enquiry
MW-2L51011	Double adjustable tee connector RL51 hose 8 mm, GZ BSP 1/4"	-	16	In stock	Enquiry
MW-2L51013	Double adjustable tee connector RL51 hose 10 mm, GZ BSP 1/4"	-	16	In stock	Enquiry

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Double “T” plug connector with external thread, type R51, designed for connecting hoses and other components in pneumatic systems. Easy and quick to use for multiple assemblies without loss of sealing on the mechanical and pneumatic sides. Material: nickel-plated brass. Working pressure: 16 bar. Working medium: vacuum, air. Operating temperature: from -20°C to +80°C. Sealing: NBR.