Is the Straight plug connector, type R19 suitable for use with oils or chemicals other than air and vacuum?

No. The Straight plug connector, type R19 is specified for vacuum and air only. Its construction (plastic body and NBR sealing), materials, and rated working medium do not guarantee chemical compatibility or resistance to oils, fuels, solvents or aggressive chemicals. Using it with oils or other chemicals could degrade the NBR seal and plastic parts, compromise the 12 bar rating, and lead to leaks or failure. For oil or chemical service, select a connector explicitly rated for those media with appropriate materials (chemicalâresistant elastomers and plastics/metals) and documented compatibility.

Can Straight plug connector, type R19 be used at sustained pressures near its 12 bar limit for prolonged periods?

Straight plug connector, type R19 is rated for a working pressure of 12 bar, but several factors determine suitability for sustained operation near that limit. The connectorâs plastic construction, NBR sealing and specified temperature range (-20Â°C to +60Â°C) indicate it can handle short-term or intermittent exposure to 12 bar within those environmental limits. However prolonged continuous operation at or very close to the maximum rating increases the risk of material fatigue, seal extrusion, creep, micro-leakage or sudden failure-especially with pressure fluctuations, elevated temperature, mechanical stress or aggressive media. For long-term reliability, design practice recommends operating with a safety margin below the maximum (typically 20â30% lower) and performing validation testing under your exact conditions. If continuous near-12-bar use is required, consider metal-bodied connectors or consult the manufacturer for endurance data and recommended duty cycle.

Does the Straight plug connector, type R19 require lubrication or special maintenance for reliable long-term sealing?

Does the Straight plug connector, type R19 require lubrication or special maintenance for reliable long-term sealing? No. The Straight plug connector, type R19 is designed for easy, repeated assemblies without loss of sealing on both mechanical and pneumatic sides. With a plastic body, NBR sealing, and rated for vacuum/air up to 12 bar and â20Â°C to +60Â°C, it does not require routine lubrication for normal use. To ensure reliable long-term sealing follow simple care practices: - Keep mating surfaces and sealing faces clean and free of dirt, dust and debris before assembly. - Avoid exposure to media or chemicals that attack NBR (strong oils, solvents, ozone, or certain fuels); if such exposure is expected, consider compatible materials. - Inspect O-rings/seals and connector seats periodically for cuts, hardening, swelling or other damage and replace seals if degraded. - Avoid excessive mechanical force or misalignment during repeated connections to prevent seal damage. - Store connectors protected from sunlight, ozone sources and extreme temperatures within the specified range. When used and maintained as above, no special lubrication or maintenance is required for reliable long-term sealing.

Coupling push-in straight, type R19

All products, Push-in fittings/

Additional information

Material	P – material (plastic)

Coupling push-in straight, type R19, Intended for connections lines and other element in systems pneumatic. easy and fast in use for repeated mounting without loss tightness po side mechanical and pneumatic. Material: plastic plastic. Working pressure: 12 bar. medium working: vacuum, air. Operating temperature: od -20°C up to +60°C. sealing: NBR.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
MW-2019001	Straight fitting RL19 hose 4 mm - hose 4 mm, plastic	-	12	In stock	Enquiry
MW-2019002	Straight fitting R19 hose 5 mm - hose 5 mm, plastic	-	12	In stock	Enquiry
MW-2019003	Straight fitting RL19 hose 6 mm - hose 6 mm, plastic	-	12	In stock	Enquiry
MW-2019004	Straight fitting RL19 hose 8 mm - hose 8 mm, plastic	-	12	In stock	Enquiry
MW-2019005	Straight fitting RL19 hose 10 mm - hose 10 mm, plastic	-	12	In stock	Enquiry
MW-2019006	Straight fitting RL19 hose 12 mm - hose 12 mm, plastic	-	12	In stock	Enquiry

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Coupling push-in straight, type R19, Intended for connections lines and other element in systems pneumatic. easy and fast in use for repeated mounting without loss tightness po side mechanical and pneumatic. Material: plastic plastic. Working pressure: 12 bar. medium working: vacuum, air. Operating temperature: od -20°C up to +60°C. sealing: NBR.