Manufacturing Process

Testing Laboratory

In our testing laboratory, we use a range of specialized equipment to certify the quality and performance of our rubber compounds.

End To End Traceability

With our advanced barcoding system, we ensure end-to-end traceability, tracking every rubber batch from Mixing to Dispatch. Our unique batch numbers provide full transparency and accountability, reflecting our commitment to high standards and precision.

Astute Mixing & Controlling

We use an advanced mixing system with automatic dosing and weighing to eliminate human error. Our data acquisition and supervisory controls ensure every product meets customer specs. This meticulous process guarantees consistent quality in every batch.

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.

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

Testing Laboratory

End To End Traceability

Astute Mixing & Controlling

Intermixing

We Deliver Custom Rubber Compounds for Every Need