Premium Roof Coating

High Performance Roof Coating is a new-generation coating developed by Nanjing Howell New MaterialTechnology Co., Ltd., benchmarked against international advanced standards.
Learn More
Premium Roof Coating

High Performance Roof Coating is a new-generation coating developed by Nanjing Howell New MaterialTechnology Co., Ltd., benchmarked against international advanced standards.
Learn More

Howell Silicone Sealant

Oxime Acetoxy Alkoxy

Versatile Sealant & Adhesive Options: MS Hybrid, Silicone, and Anaerobic

Ms Hybrid Sealants

Howell MS sealant made with our own silane terminated polyether(MS polymer). This kind of new generation sealant is gaining popular among the world. Howell MS sealants have good bonding ability to various substrates like metals, glass and plastics, paintable is its another advantage which is quite suitable for home sealing purposes. The most important benefit it can give is that they are naturally environmentally friendly by containing low or 0 Vocs.

Silicone Sealants

Howell Silicone Sealants provide strong adhesion, tensile strength, and excellent weather resistance, making them ideal as high heat silicone sealant. Their quake resistance, electrical insulation, moisture-proof, leak-proof, and odor resistance properties also make them suitable for automotive silicone sealant applications. Furthermore, their durability and resistance to mildew and moisture make them an excellent choice for bathroom silicone sealant. Howell Silicone Sealants deliver versatile performance for a wide range of applications, including in high temperature, automotive, and bathroom environments.

Anaerobic sealants

Howell specializes in the research and development, as well as the manufacturing, of anaerobic sealants specifically designed for flange sealing and pipe thread and joint locking. These sealants, ideal for metal-to-metal interfaces, cure in the absence of air, ensuring leak-proof, vibration-resistant seals. Essential in industries like automotive, aerospace, and heavy machinery, Howell's products offer robust strength and durability. Their expertise in anaerobic technology has made them a leader in the field, providing reliable and efficient sealing solutions that adhere to stringent industrial standards.

Fiberglass Tissue

The fiberglass tissue is made of chopped fibers, which are randomly and evenly distributed into continuous fiberglass paper sheets by paper-making method, and bonded with binder. Its main performance & characteristics : chemical corrosion resistance, fire resistance, flame retardant, waterproof, aging resistance, weather resistance, insulation and other characteristics. The fiberglass tissue is widely used as reinforced plastic substrate, anti-corrosion, thermal insulation, fire retardant, waterproof materials, gypsum board ceiling building materials, VOCSCR carrier, PVC floor and carpet substrate, epoxy copper clad laminate and electrical insulation products.

Roof Coating

Whether your roof is large or small, flat or sloped, Silicone Roof Coatings provide a proven, guaranteed solution for renewing your weathered roof. They can be applied to virtually any existing roofing surface to create a seamless membrane that protects against permanent ponding water, ultraviolet light and severe weather.

The key advantages of using a silicone roofing coating are:

Silicone is permanent and will not degrade, chalk or crack under harsh UV rays.
Silicone forms a seamless membrane that withstands permanent ponding water without softening.

Silicone creates a smooth surface that offers excellent resistance to mold, mildew and staining.

AVOID TIME-CONSUMING AND COSTLY TEAR-OFFS.

By re-covering, you save on labor costs and avoid landfill expenses, plus your existing roof can be re-covered without any interruption to normal business operations.

EXTEND THE LIFE OF YOUR ROOF. By renewing your roof, you’ll never need to replace the roof again. REDUCE ENERGY COSTS. The highly-reflective, glossy finish of Silicone Roof Coatings can help reduce energy costs.

IDEAL FOR USE ON FLAT AND LOW-SLOPED ROOFS.

Apply over pre-existing elastomeric roof coatings, metal roofs, built-up roofing, mineral cap sheet, and weathered single ply membranes (EPDM, Hypalon® and TPO/CPA). Re-coat existing sprayed-in-place polyurethane foam, concrete, wood, and many other coatings

Starting from adhesives developed for vehicles and machine parts bonding and sealing, gasket free sealant, flange sealants, screw lock sealants, fiberglass tissue...

Manufacturing bonding and sealing materials

Years of Experience in

Developing and Manufacturing bonding and sealing materials

Nanjing Howell New Material Technology Co., Ltd. is engaged in developing and manufacturing bonding and sealing materials for over 20 years. It started from a small factory with a few products to current size with 8000M ² factory and 400M ² lab, providing our clients not only a variety of bonding products but also customization services for their special bonding demands.

MORE ABOUT US

Advantages and tech showcase

An experienced R&D team with leading technicians owning 10 more years developing ability
Working with Industry TOP brands for new products development
Possessing exclusively high active MS polymer, no need curing agent in the formula

Laboratory Area

Factory Scale

Production Line

Packaging Line

INTEGRATED SEALING AND BONDING MATERIALS MANUFACTURER

With the leading core technology, strict selection of raw materials, rigorous production, stable and reliable quality, professional and considerate service, Howell provides customers with a full range of bonding and sealing solutions at home and abroad.

LATEST NEWS

April 29, 2026

FEICON 2026 | Howell Strengthens Its Presence in Latin America

April 28, 2026

Howell Successfully Concludes Participation at MosBuild 2026

February 06, 2026

Howell To Exhibit at Korea Coatings Show 2026 – Booth C11

Howell is pleased to announce that we will be exhibiting at the Korea Coatings Show 2026, taking place March 25–27, 2026, in Incheon, Korea. We warmly invite industry professionals and partners to visit us at Booth C11.At this year’s show, Howell will focus on showcasing our finished product solutio

February 03, 2026

Visit Nanjing Howell at FEICON 2026 | Booth L025

We Are Exhibiting at The Big 5 Dubai 2025 — Showcasing Our New Era of Material TechnologyWe are excited to announce that our company will participate in The Big 5 Dubai 2025, one of the world’s most influential exhibitions for the construction and building materials industry. As a global hub for inn

February 03, 2026

Exhibition Preview | Nanjing Howell at MosBuild 2026

May 30, 2026

Reduce Disruption with Alkoxy Silicone Roof Coatings

The commercial roofing industry is undergoing a significant transformation as facility managers and building owners prioritize long-term durability and minimal operational downtime. Traditional roof replacement projects often involve heavy machinery, noxious odors, and extensive structural tearing,