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Butyl Rubber, IIR

Product Description:

Butyl Rubber, IIR, a synthetic rubber with exceptional airtightness, heat resistance, and chemical stability, is ideal for tires, gaskets, and sealing applications requiring long-term performance in harsh environments.

In addition, the elastomer maintains softness and elasticity at lower temperatures, which helps prevent stiffness or cracking during processing or storage.

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Product Details

IIR rubber (Butyl Rubber) stands out for its superior air retention—critical for tire inner liners—and strong resistance to heat, ozone, and chemicals. Its low gas permeability and flexibility at low temperatures make it a top choice for industrial seals, gaskets, and automotive components, ensuring reliable performance in diverse operating conditions.

For more specifications please feel free to contact us.

IIR
Item	Unit	IIR1953
Item	Unit	Premium Grade	Qualified Grade	Customized Grade
Appearance		White Solid
Mooney Viscosity	ML(1+8)125℃	51.0±3.0	51.0±5.0	51.0±5.0
Unsaturated	(Mole Fraction)%	1.70	±0.20	1.70±0.30
Volatile matter	(Mass Fraction/Wt)%	≤0.30	≤0.50	≤0.50
Ash Content	(Mass Fraction/Wt)%	≤0.20
FH	dN ·m	16.8±1.4	16.8±1.4	>18.20
FL	dN ·m	3.3±0.9	3.3±0.9	3.6±0.9
Ts1	min	2.0±1.0
T50	min	5.3±2.0
T90	min	20.4±3.3
Stabilizer	(Mass Fraction/Wt)%	≤0.60		≤0.60
Antioxidant	(Mass Fraction/Wt)%	≥0.03		≥0.03

BIIR
Item	Unit	Grade
Item	Unit	BIIR2828	BIIR2249	BIIR2332
Appearance		White to Beige Solid
Mooney Viscosity	ML(1+8)125℃	32.0±4.0	46.0±4.0	32.0±4.0
Bromine Content	(Mass Fraction/Wt)%	2.00±0.20		2.10±0.20
Volatile matter	(Mass Fraction/Wt)%	≤0.50
Ash Content	(Mass Fraction/Wt)%	≤0.70
FH	dN ·m	6.9±2.0	8.2±2.0	7.5±2.0
FL	dN ·m	2.0±1.0	2.7±1.0	2.5±1.0
Ts1	min	2.9±1.2	3.8±1.2	≥1.5
T50	min	5.3±1.5	6.0±1.5	4.3±1.5
T90	min	8.4±2.0	9.0±2.0	7.4±2.0
Stabilizer	(Mass Fraction/Wt)%	1.2-1.6		1.0-1.6
Antioxidant	(Mass Fraction/Wt)%	≥0.03		≥0.02

CIIR
Item	Unit	Grade
Item	Unit	CIIR1338
Appearance		White to Beige Solid
Mooney Viscosity	ML(1+8)125℃	38.0±4.0
Chlrine Content	(Mass Fraction/Wt)%	1.25±0.10
Volatile matter	(Mass Fraction/Wt)%	≤0.50
Ash Content	(Mass Fraction/Wt)%	≤0.50
FH	dN ·m	8.0±1.2
FL	dN ·m	2.5±0.8
Ts1	min	1.2±0.8
T50	min	3.0±1.5
T90	min	8.0±2.5
Antioxidant	(Mass Fraction/Wt)%	≥0.03

FAQ

Can I get a customized consultation for my product needs?

Yes，we offer free customized product consultation services. You can submit your specific requirements through an online form or contact our sales team directly. We will arrange a dedicated connection based on your needs and conduct detailed discussions.
Do you offer free samples?

Yes, we offer free existing samples for quality testing. Customers only need to bear the shipping cost. For customized formulations, sample cost will be discussed based on specific requirements.

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Butyl Rubber,IIR

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