Professional Silicone Rubber Parts Manufacturers

HARDENED RUBBER BUNG

Hardened rubber bungs and plugs are used to seal the bottle, tube, barrel containing liquids or gases and are widely applicable in laboratory, commercial and industrial applications. They are usually manufactured in different hardness from shore A30-A80 with the aid of premium-grade rubber compounds. Such compounds include Nitrile, EPDM, Silicone, SBR, Neoprene, and Viton. There might be a hole or two hollow hardened rubber bungs specially used with laboratory glass to collect the reaction result.
Silicone hardened rubber bung is more popular and ideal for applications that require a high degree of purity, such as biological or food containers. Such bung is made of high-quality Silicone, FDA approved. It can resist a wide range of chemical fluids and withstand extreme temperatures ranging from -60 °C to 200 °C. The Silicone hardened rubber bung has a wide range of colours from black, white, brown, grey, and transparent.
The Hardened rubber bung is pretty valuable for small-scale laboratory experiments and environments dealing with non-corrosive gases. If there is the need to insert a funnel into the apparatus while still using the bung, a hardened rubber bung with a hole is usually preferable. With all that being said, it is essential to note the chemical composition of the bung and the chemical substance you’re dealing with to prevent corrosion or degradation of the material.
Because the sturdy hardened rubber bung fits so well in the glassware used in the laboratory, they help the chemist maintain a clean environment, avoid contamination, and prevent spillage.
Many manufacturers produce custom-sized rubber stoppers and other rubber parts to meet different chemical companies’ requirements. The rubber stopper is used in many experiments and some in a specific experiment. Due to the increased use of rubber stoppers, they are being produced on a large scale.

Our Products

HARDENED RUBBER BUNG

All dimensions are in mm​

Part No.Diameter ADiameter BHeightColourMaterials 
RSA1.6-0.4-15.91.60.415.9TransparentSilicone
RSA2-0.5-19.120.519.1TransparentSilicone
RSA3.2-0.8-15.93.20.815.9TransparentSilicone
RSA3.2-1.6-15.93.21.615.9TransparentSilicone
RSA4.8-1.6-15.94.81.615.9TransparentSilicone
RSA4.8-1.6-19.14.81.619.1TransparentSilicone
RSA5.5-1.2-38.15.51.238.1TransparentSilicone
RSA6.4-3.2-19.16.43.219.1TransparentSilicone
RSA6.4-3.2-25.46.43.225.4TransparentSilicone
RSA8.7-4.8-15.98.74.815.9TransparentSilicone
RSA8.7-4.8-25.48.74.825.4TransparentSilicone
RSA9.2-6.2-12.89.26.212.8TransparentSilicone
RSA9.5-6.5-18.59.56.518.5TransparentSilicone
RSA11-8.5-17.5118.517.5TransparentSilicone
RSA11.5-6.5-2511.56.525TransparentSilicone
RSA12-9-1812918TransparentSilicone
RSA12.6-9-1712.6917WhiteEPDM
RSA14.3-7.9-28.614.37.928.6TransparentSilicone
RSA14.3-9-25.414.3925.4TransparentSilicone
RSA15-11-20151120WhiteEPDM
RSA15.1-10.3-25.415.110.325.4TransparentSilicone
RSA15.9-11.1-22.215.911.122.2TransparentSilicone
RSA16.7-12.7-25.416.712.725.4TransparentSilicone
RSA17-13.6-241713.624WhiteEPDM
RSA17.5-11.1-25.417.511.125.4TransparentSilicone
RSA19-15-27191527WhiteEPDM
RSA19.1-14.3-25.419.114.325.4TransparentSilicone
RSA19.1-14.3-14.319.114.314.3TransparentSilicone
RSA19.8-15.9-25.419.815.925.4TransparentSilicone
RSA20-15.5-162015.516TransparentSilicone
RSA21-16-26211626WhiteEPDM
RSA23-18-26231826WhiteEPDM
RSA23.5-19-19.523.51919.5TransparentSilicone
RSA23.8-18.3-25.423.818.325.4TransparentSilicone
RSA25.4-19.8-25.425.419.825.4TransparentSilicone
RSA26-20-28262028WhiteEPDM
RSA27-23-25.4272325.4TransparentSilicone
RSA27.9-23.8-25.427.923.825.4TransparentSilicone
RSA29-23-28292328WhiteEPDM
RSA31.8-26.2-25.431.826.225.4TransparentSilicone
RSA33-26-28332628WhiteEPDM
RSA33.4-27-25.433.42725.4TransparentSilicone
RSA36.5-30.2-25.436.530.225.4TransparentSilicone
RSA37-28-30372830WhiteEPDM
RSA38.9-31.8-25.438.931.825.4TransparentSilicone
RSA39-31-25393125TransparentSilicone
RSA41.3-33.3-25.441.333.325.4TransparentSilicone
RSA42-32-31423231WhiteEPDM
RSA42.9-35.7-25.442.935.725.4TransparentSilicone
RSA43-36-25433625TransparentSilicone
RSA44.5-37.3-25.444.537.325.4TransparentSilicone
RSA46-38-25463825TransparentSilicone
RSA46-38.1-25.44638.125.4TransparentSilicone
RSA49-37-31493731WhiteEPDM
RSA50-41.3-25.45041.325.4TransparentSilicone
RSA52-43-32524332WhiteEPDM
RSA52.4-44.5-25.452.444.525.4TransparentSilicone
RSA53-45-25534525TransparentSilicone
RSA56-46-34564634WhiteEPDM
RSA56-47.6-25.45647.625.4TransparentSilicone
RSA62-51-35625135WhiteEPDM
RSA62.7-50-25.462.75025.4TransparentSilicone
RSA63-50-25635025TransparentSilicone
RSA63.5-54-25.463.55425.4TransparentSilicone
RSA67-55-39675539WhiteEPDM
RSA68.3-57.9-25.468.357.925.4TransparentSilicone
RSA75-61.9-34.97561.934.9TransparentSilicone
RSA88.9-76.2-38.188.976.238.1TransparentSilicone
RSA101.6-82.6-38.1101.682.638.1TransparentSilicone
RSA127-88.9-50.812788.950.8TransparentSilicone
  • Material: EPDM/NR/SBR/Silicone/FKM/NBR/CR
  • Hardness: 50-60 Shore A
  • Temperature Rang: -20℃ to 150℃, we can customize products with a temperature resistance of more than 300℃.
  • Colors: Black,White Or according to the Pantone NO#.
  • Custom service available, we can offer special products according to your requirements.

Do you need a quote? Or need to place an order?
We also provide customized services, and can make various non-standard silicone rubber parts according to your drawings or samples.
Welcome to contact us for more information!

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