Manufacturing Process

Astute Mixing & Controlling

We’ve employed an advanced mixing system equipped with automatic carbon and oil dosing, complemented by auto chemical and polymer weighing systems, ensuring zero human error. Our advanced data acquisition and supervisory control systems oversee every stage, guaranteeing that each product aligns perfectly with customer specifications. This meticulous approach ensures consistent quality, reinforcing GB Gummi’s commitment to excellence in every batch we produce.

Intermixing

We utilize our advanced Intermesh intermixing system, which combines Hydraulic RAM with TCU controls. By precisely managing Temperature, Energy, and Time, we ensure each rubber compound is optimally mixed in a dust-free environment for superior performance.

Final Batching and Testing

We use an advanced intermixing system and robust stock blending unit for perfect rubber compound mixing. After efficient cooling, the rubber is cut into sheets or strips to meet customer requirements, ensuring high-quality, tailored solutions.

Straining

We offer in-house straining to meet customers’ specific needs for rubber components in critical applications. Using a gear pump extruder, we filter and purify the rubber compound, ensuring top-quality standards and purity.

GB GUMMI Ref:	GBK
ASTM Classification:	CIIR
FULL FORM OF RM/Rubber	Derivative of butyl rubber which has been reacted with chlorine in a continuous process
Benefits	Low gas permeability Excellent ozone resistance Good steam resistance Good fire resistance.
Limitations	Poor resistance to oils and non-polar solvents .
Service Temperature °C	-50 to 120°C
Applications / Products	Inner tyre tubes, breathing apparatus for defence and fire services, Dampers.

GB GUMMI Ref:	GBH
ASTM Classification:	HNBR
FULL FORM OF RM/Rubber	Hydrogenated (≥ 90% saturation) version of acrylonitrile-butadiene rubber, which shows improved stability and physical properties compared to standard NBR
Benefits	Good resistance to oils and non-polar solvents High tensile strength Good ozone and weathering resistance Good abrasion resistance Excellent heat resistance.
Limitations	Decreased low temperature flexibility compared to NBR Poor steam resistance.
Service Temperature °C	-25 to 170°C
Applications / Products	Oil & gas industry.

GB GUMMI Ref:	GBV
ASTM Classification:	FVMQ
FULL FORM OF RM/Rubber	Copolymer of fluorovinyl and methyl siloxane
Benefits	Excellent resistance to high and low temperatures Excellent ozone resistance Excellent compression set resistance Good resistance to oils and most non-polar solvents.
Limitations	Poor tensile strength and abrasion resistance.
Service Temperature °C	-60 to 200°C
Applications / Products	Food and medical applications, aircraft fuel systems.

GB GUMMI Ref:	GBV
ASTM Classification:	VMQ
FULL FORM OF RM/Rubber	Polydimethylsiloxane containing vinyl (VMQ)
Benefits	Excellent resistance to high and low temperatures.
Limitations	Poor tensile strength Poor resistance to oils and non-polar solvents.
Service Temperature °C	-60 to 225°C
Applications / Products	Food and medical applications.

GB GUMMI Ref:	GBD
ASTM Classification:	ECO
FULL FORM OF RM/Rubber	Polymers based on polyepichlorohydrin which may also contain ethylene oxide and allyl glycidyl ether
Benefits	Excellent ozone resistance Good resistance to oils .Fire resistance.
Limitations	Poor resistance to some non-polar solvents Poor steam resistance.
Service Temperature °C	-35 to 125°C
Applications / Products	Seals, gaskets, diaphragms, cable jackets and belting.

GB GUMMI Ref:	GBN
ASTM Classification:	NR
FULL FORM OF RM/Rubber	Natural Rubber
Benefits	High Tensile Properties, Better Abrasion resistance, Good Resilience properties
Limitations	Poor resistance to oils and fuels, inferior weather resistance.
Service Temperature °C	-30 to 60°C
Applications / Products	Suspension Mounts, Damper, Bushing, Bump Stop, Diaphragm, Isolator Mount, Food Grade Seals, V BELTS, etc.

Manufacturing Process

Astute Mixing & Controlling

Intermixing

Final Batching and Testing

Straining

We Deliver Custom Rubber Compounds for Every Need