NBR, Nitrile Butadiene Rubber, is a closed-cell foam specifically designed to fit the HVAC pipes. It excludes heat, prevents condensation and is fire-proof. It fits into tricky Y-shaped joints since it is super flexible, and it ensures that the system will operate in the same manner and meet international standards.

The joint can be put in place without any special tools, which makes the job quicker and easier on site. It also has Microban protection to help keep mould from forming, meets the ASTM E84 25/50 Class O fire rating, and follows RoHS and CE requirements. Because it doesn’t let heat pass through easily, it helps cut down energy loss, and at the same time, it remains strong, safe, and well suited for heavy-duty VRF use.

Well, it is fireproof, it is basically. We subject it to serious tests, and it was rated ASTM E84 -25/50 -Class O at the top of the categories. That prevents fire from spreading and smog buildup, which provides life-saving personnel with a chance of escape and achieves challenging building standards all over the world.

Microban prevents the sprouting of mould, germs, and bacteria in the foam. It implies cleaner indoor air, prevents the insulation from wearing out, and makes the building feel healthier, which is extremely crucial in both office and home VRF systems.

It holds important approvals like the ASTM E84 fire rating, RoHS compliance for restricted materials, and CE safety marking. In practical terms, these certifications show that the product is built for applications where performance, safety, and regulatory acceptance really matter.

Its super-low heat conduct prevents the leakage of hot or cold through the lines. That maintains the refrigerant in the optimal temperature, reduces the load of the compressor and reduces the overall energy consumption. It saves a great deal of money in the long run and makes the entire building run in an easier way.

Yes, it features a closed-cell design that supports water and UV rays, making it suitable for use outside as well. If it is exposed to the sun throughout the day, we recommend using a UV shield coat. Its germ-blocking and fire-proofing features would provide a little more protection in the house and make the air safer.

Each bit is laser cut and CNC technology suited to fit precisely the shape of each Y-joint. That will have a snug, seamless fit which is easy to wear and prevents heat and moisture to escape.

With proper installation and basic protection from mechanical damage, it can easily serve for 15–20 years. The closed-cell foam doesn’t soak up moisture, doesn’t deteriorate quickly with age, and doesn’t support microbial growth, so its insulation value stays almost the same even after years of use.

At 227 Enterprise, we work with high-grade AP ArmaFlex insulation and cut it on CNC and laser routing machines so every piece fits properly without gaps or adjustments on site. The material itself is tested for fire safety and resistance to microbial growth, and it has already proven its performance in real installations. Along with the product, we make sure there’s dependable technical support, regular availability, and consistent quality, so your VRF project can be executed smoothly without unnecessary delays or rework.