Compound – sscompounds.com

COMPOUNDS

SRP Specialty Compounds develops elastomer materials suitable for a wide range of industrial environments. These compounds are formulated to deliver reliable performance under demanding operating conditions including high temperatures, aggressive chemicals, and mechanical stress.

The company produces compounds based on several advanced elastomer systems, including FKM, FFKM, HNBR, AFLAS, VMQ, Fluorosilicone, AEM, and ACM. These materials are widely used across industries where high chemical resistance, thermal stability, and durability are required.

SRP compounds are designed to perform within a wide operating temperature range from −60°C to +375°C, depending on the specific elastomer material and application conditions. This wide temperature capability enables the company to supply compounds suitable for applications ranging from low-temperature environments to extremely high-temperature industrial systems.

MATERIALS AND TECHNICAL RANGE

1 HNBR

HARDNESS RANGE (SHORE A): 50–95

Advantages:

Excellent heat and oil resistance
Superior ozone and weather resistance
Improved mechanical strength
Good abrasion resistance
Suitable for dynamic and static sealing applications

Limitations:

Higher cost than NBR
Lower flexibility than silicone at very low temperatures
Chemical resistance depends on formulation

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.48	ISO 2781
2	TENSILE STRENGTH	MPA	7.58	ISO 37
3	ELONGATION AT BRAKE	%	225	ISO 37
4	COMPRESSION SET	%	22	METHOD A, ISO 815-1
5	VOLUME CHANGE (IRM 1)	%	-63	ISO 812
6	VOLUME CHANGE (IRM 3)	%	13	ISO 1817
7	MODULUS AT 100%	MPA	4	ISO 37

2 FKM (General) - Bisphenol

HARDNESS RANGE (SHORE A): 60–90

Advantages:

Excellent chemical resistance
High-temperature resistance up to 220 °C
Excellent oil and fuel resistance
Long service life
Requires fewer compounding chemicals

Limitations:

Expensive
Poor resistance to hot tear
High specific gravity
Requires stainless steel molds
Limited low-temperature flexibility

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.82	ISO 2781
2	TENSILE STRENGTH	MPA	11	ISO 37
3	ELONGATION AT BRAKE	%	220	ISO 37
4	COMPRESSION SET (70 hr at 200 degree C)	%	16	ISO 815-1 METHOD A
5	VOLUME CHANGE (IRM 1)	%	1.14	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	3.2	ISO 1817
7	MODULUS AT 100%	MPA	5	ISO 37

3 FVMQ (Fluorosilicone)

HARDNESS RANGE (SHORE A): 30–80

Advantages:

Excellent fuel & gasoline resistance
Wide temp range (–60 °C to +200 °C)
Great low-temp flexibility
Strong ozone & weather resistance
Good compression set resistance
Good mechanical properties

Limitations:

Expensive
Moderate tensile and tear strength compared to hnbr and fkm
Lower abrasion resistance than HNBR or FKM
Not suitable for strong acids and ketones
Not suitable for dynamic appl

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.48	ISO 2781
2	TENSILE STRENGTH	MPA	7.58	ISO 37
3	ELONGATION AT BRAKE	%	225	ISO 37
4	COMPRESSION SET	%	22	ISO 815 -1 METHOD A
5	BRITTLE POINT	%	-63	ISO 812
6	VOLUME SWELL IN FUEL (B)	%	13	ISO 1817
7	MODULUS AT 100%	MPA	4	ISO 37

4 FKM GLT(Great Low Temperature)

HARDNESS RANGE (SHORE A): 60–90

Advantages:

Improved low-temperature flexibility (–35 to +225°C)
Excellent oil and fuel resistance
High-temperature stability
Good compression set

Limitations:

Improved low-temperature flexibility (–35 to +225°C)
Excellent oil and fuel resistance
High-temperature stability
Good compression set

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.80	ISO 2781
2	TENSILE STRENGTH	MPA	10.3	ISO 37
3	ELONGATION AT BRAKE	%	250	ISO 37
4	COMPRESSION SET	%	19	ISO 815-1 METHOD A
5	VOLUME CHANGE (OIL 1)	%	1.16	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	3.5	ISO 1817
7	MODULUS AT 100%	MPA	3.6	ISO 37

5 FKM VPL (Very Low Temperature)

HARDNESS RANGE (SHORE A): 60–90

Advantages:

Excellent resistance to oils, fuels, and hydrocarbons
Enhanced resistance to aggressive chemicals
Temperature range (-40 to 220 °C)
Good compression set
Suitable for low temperature applications

Limitations:

Expensive
Higher specific gravity
Limited resistance to strong polar solvents
Limited raw material source

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.83	ISO 2781
2	TENSILE STRENGTH	MPA	13	ISO 37
3	ELONGATION AT BRAKE	%	220	ISO 37
4	COMPRESSION SET	%	11	ISO 815-1 METHOD A
5	VOLUME CHANGE (OIL 1)	%	6	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	9	ISO 1817
7	MODULUS AT 100%	MPA	6.9	ISO 37

6 FEPM AFLAS

HARDNESS RANGE (SHORE A): 60–95

Advantages:

Excellent resistance to amines and alkaline chemicals
Very good steam and hot water resistance
Temperature range (-3 to 220 °C)
Good oil resistance
Excellent aging resistance

Limitations:

Limited low temperature flexibility
Expensive
Limited raw material source

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.6	ISO 2781
2	TENSILE STRENGTH	MPA	18	ISO 37
3	ELONGATION AT BRAKE	%	220	ISO 37
4	COMPRESSION SET	%	14	ISO 815-1 METHOD A
5	VOLUME CHANGE (STEAM RESISTANT)	%	2	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	11.8	ISO 1817
7	MODULUS AT 100%	MPA	6	ISO 37

7 FFKM – Perfluoroelastomer

HARDNESS RANGE (SHORE A): 60–95

Advantages:

Near-universal chemical resistance
Temperature range(0 to 375 °C continuous)
Excellent compression set at elevated temperatures
Very low contamination and outgassing
Suitable for ultra-severe chemical and high-temperature environments
Suitable for extreme high temperature application.

Limitations:

Extremely expensive (5 to 6 lakhs per kgs)
Not suitable for low Temperature application
Moderate mechanical strength compared to specialty elastomers
Requires controlled processing and postcuring

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	2.05	ISO 2781
2	TENSILE STRENGTH	MPA	17	ISO 37
3	ELONGATION AT BRAKE	%	200	ISO 37
4	COMPRESSION SET (O-RING)	%	23	ISO 815-1 METHOD A
5	FUEL B CHANGE IN VOLUME	%	0.2	ISO 1817
6	HYDRAULIC FLUID RESISTENCE	%	4.6	ISO 1817
7	MODULUS AT 100%	MPA	6.9	ISO 37

8 FKM ETP – Enhanced Performance Fluorocarbon

HARDNESS RANGE (SHORE A): 60–95

Advantages:

Excellent resistance to oils, fuels, and aggressive chemicals
High-temperature resistance up to 220 °C
Very good compression set and aging resistance
Suitable for severe industrial and automotive applications

Limitations:

Higher material cost
Limited low-temperature flexibility (approx. –15 °C)
Not suitable for strong polar solvents

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.82	ISO 2781
2	TENSILE STRENGTH	MPA	18	ISO 37
3	ELONGATION AT BRAKE	%	220	ISO 37
4	COMPRESSION SET (70 hr at 200 °C)	%	51	ISO 815-1 METHOD A
5	SOLVENT RESISTENT - MEK	%	21	ISO 1817
6	POTASSIUM HYDROXIDE IN WATER	%	2	ISO 1817
7	MODULUS AT 100%	MPA	7	ISO 37

9 FKM Peroxide Cure

HARDNESS RANGE (SHORE A): 60–90

Advantages:

Improved steam and hot water resistance
Enhanced chemical resistance
Temperature range(-17 to 220 °C continuous)
Good compression set resistance
Suitable for oil & gas applications

Limitations:

Expensive
Limited low temperature flexibility
Requires controlled processing
Poor resistance to strong polar solvents

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.83	ISO 2781
2	TENSILE STRENGTH	MPA	23.4	ISO 37
3	ELONGATION AT BRAKE	%	320	ISO 37
4	COMPRESSION SET	%	15	ISO 815-1 METHOD A
5	FUEL B	%	2	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	0.5	ISO 1817
7	MODULUS AT 100%	MPA	4.93	ISO 37

10 ACM (Poly Acrylic)

HARDNESS RANGE (SHORE A): 50–90

Advantages:

Excellent resistance to hot oils & ATF
Very good heat resistance (up to 175 °C)
Good ozone & weather resistance
Good aging resistance
Good high-temp compression set resistance

Limitations:

Poor low-temperature flexibility
Not suitable for fuel applications
Moderate mechanical strength
Higher cost than NBR

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.33	ISO 2781
2	TENSILE STRENGTH	MPA	12	ISO 37
3	ELONGATION AT BRAKE	%	210	ISO 37
4	COMPRESSION SET	%	12	ISO 815-1 METHOD A
5	VOLUME CHANGE (IRM 1)	%	-2.9	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	10.1	ISO 1817
7	MODULUS AT 100%	MPA	6	ISO 37

11 AEM (Vamac)

HARDNESS RANGE (SHORE A): 50–90

Advantages:

Excellent heat resistance (up to 150 °C continuous)
Very good oil resistance
Good low-temperature flexibility (–40 °C)
Excellent ozone and weather resistance
Low compression set

Limitations:

Poor resistance to fuels and aromatic hydrocarbons
Limited resistance to polar solvents
Higher cost than NBR and EPDM

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.24	ISO 2781
2	TENSILE STRENGTH	MPA	18	ISO 37
3	ELONGATION AT BRAKE	%	250	ISO 37
4	COMPRESSION SET	%	24	ISO 815-1 METHOD A
5	VOLUME CHANGE (OIL 1)	%	6	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	26	ISO 1817
7	MODULUS AT 100%	MPA	3.3	ISO 37

12 ECO (Epichlorohydrin)

HARDNESS RANGE (SHORE A): 50–90

Advantages:

Excellent fuel, oil & hydrocarbon resistance
Good heat resistance (~150 °C continuous)
Excellent ozone & weather resistance
Low gas permeability
Good aliphatic hydrocarbon resistance
Good aging stability

Limitations:

Poor low-temperature flexibility (generally limited below –30 °C)
Moderate mechanical strength compared to HNBR
Limited resistance to aromatic solvents and strong chemicals
Processing requires careful control

MATERIAL TEST REPORT:

SL NO	PROPERTY	UNIT	ACTUAL VALUE	TEST STANDARD
1	SPECIFIC GRAVITY	-	1.25	ISO 2781
2	TENSILE STRENGTH	MPA	13	ISO 37
3	ELONGATION AT BRAKE	%	400	ISO 37
4	COMPRESSION SET	%	25	ISO 815-1 METHOD A
5	VOLUME CHANGE (OIL 1)	%	-6	ISO 1817
6	VOLUME CHANGE (OIL 3)	%	-2	ISO 1817
7	MODULUS AT 100%	MPA	6	ISO 37

High-Performance Elastomer Compounds for Critical Applications

Advanced materials, precise compounding, and reliable supply for demanding industries.