Rubber moulding materials

Butser Rubber manufacture mouldings, seals and gaskets from a wide range of organic and synthetic rubbers and elastomers

Materials

Standard ‘off the shelf’ rubbers and silicones:

(IIR) Butyl rubber

Butyl rubber is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for Isobutylene Isoprene Rubber

Stocked

  • Butyl 40 (B 40)
  • Butyl to BS3227 (B50) BLACK
  • Butyl 50 to BS 3227:2003 GRADE B50
  • Butyl 60
  • Butyl (BS3227) (B60) (56-65)
  • Chloro-butyl rubber grade 60 black to def stan 93-86
  • Bromo buytl BS3227:2003 grade B60

EPDM Rubber Mouldings

EPDM Rubber Moulders

(EPDM) Ethylene propylene diene monomer

EPDM is available as a copolymer (EPR) or as a terpolymer (EPDM). These elastomers have excellent resistance to heat, water, steam, weathering and ozone, and are widely used in the automotive industry.

Stocked

  • EPDM 20/25 Black
  • EPDM 40 Shore
  • EPDM 40/45 Black
  • EPDM 50 Automotive Grade – Burn test to ISO3795 FMVSS 302
  • EPDM 50 Rubber – Insulative Black
  • EPDM 60 Grey
  • EPDM 60 Automotive Grade – Burn test to ISO3795 FMVSS 302
  • EPDM 60 Peroxide
  • EPDM 65/75 Black
  • EPDM 65/75 Pillar Box Red
  • EPDM 70 Shore
  • EPDM 70 Black Insulative
  • EPDM 70 Red
  • EPDM 70 Automotive Grade – Burn test to ISO3795 FMVSS 302
  • EPDM 70 Bright White
  • EPDM 70 White FDA Approved
  • EPDM 70 Black (Water Council Type)
  • EPDM 70 White FDA Compliant
  • EPDM 70 Grey (Non Marking Grade)
  • EPDM 75 Automotive Grade – Burn test to ISO3795 FMVSS 302
  • EPDM 80 Automotive Grade – Burn test to ISO3795 FMVSS 302
  • EPDM 80 Peroxide DTD 5597A
  • EPDM 80 DTD5597A Grade 80 Black
  • EPDM 80/85FDA Aqueous
  • EPDM/SBR 80 Black
  • EPDM 80 High ENB.
  • EPDM 90 Automotive Grade – Burn test to ISO3795 FMVSS 302

(FVMQ) Fluorosilicone and fluoroelastomers

Stocked

  • FLUOROSILICONE LS63
  • FLUOROSILICONE AMS R 25988 GRADE 70 BLUE/RED
  • FLUOROSILICONE 40 BLACK
  • FLUOROSILICONE RUBBER GRD 50 GREEN
  • FLUOROSILICONE RUBBER TO AMS-R-25988 CLASS 1 GRADE 60 TYPE 2 COLOUR BLUE
  • FLUOROSILICONE RED
  • FLUOROSILICONE (LS63) BLUE
  • FLUOROSILICONE 60, BLACK
  • FLUOROSILICONE 60 BLUE
  • FLUOROSILICONE RED (LS63 RIO)
  • FLUOROSILICONE R 25988 B GRADE 70 (AMS-R-25988) BLUE
  • FLUOROSILICONE RUBBER, GRADE 80. BLUE
  • FLUORO-SILICONE 80, WHITE. S.G. IS 1.7
  • FLUOROSILICONE 60, BLACK. S.G. IS 1.45
  • FLUROSILICONE LS 2860 VAROX TRANS
  • FLUOROSILICONE 40 SHORE, BLACK, HEAT TEMPERED TO 250 DEG
  • FLUOROSILICONE GRADE 80 BLUE
  • FLUOROSILICONE (FSE7560-D1) EQUIVALENT TO LS63U

(HNBR) (H-NBR) Hydrogenated nitrile butadiene rubber

HNBR is known for its physical strength and retention of properties after long exposure to heat, oil and chemicals.

Stocked:

  • HNBR 50 SHORE
  • HNBR 50 (BASIC PROPERTIES)
  • HNBR 50/60 SHORE
  • HNBR 60 GRADE (HIGH TEAR) BLACK
  • HNBR 60 SHORE
  • HNBR 60 SHORE
  • HNBR 70 GREEN
  • HNBR 70 ZSC
  • HNBR 70
  • HNBR 70
  • HNBR 70 BLUE FDA COMPLIANT
  • HNBR 70 (BUTSER PAD BLEND)
  • HNBR 80
  • HNBR 80/85 BLUE
  • HNBR 90, BLACK. S.G. OF 1.25
  • HNBR GRADE 90, BLACK

(NR) Natural rubber

Natural Rubber’s elasticity makes it suitable for various shock absorber and suspension applications including mountings designed to reduce vibration. Being relatively impermeable to gases, Natural rubber is used in applications such as:  Air hoses, Vacuum tubes, and balloons.

Stocked:

  • NR 30/35 BLACK.
  • NR 40 BLACK
  • NR 40 ELONGATION
  • NR 40 GREY F/Q
  • NR 40 LIGHT GREEN
  • NR 40 LIGHT GREY
  • NR 40 OLIVE GREEN
  • NR 40. BS 1154. (Z 40)
  • NR 50 (Z 50)
  • NR 50 BLACK
  • NR 55. BS1154:2003 Y3 WHITE
  • NR 60 (Z60)
  • NR 60 (YELLOW)
  • NR 70 (ARE 1070)
  • NR 70 F/Q WHITE
  • NR 70 GREY HIGH TEAR/WEAR NERO
  • NR 70. BS 1154. (Z 70)
  • NR 70 +/-3IRHD
  • NATURAL RUBBER (Z 70) BLACK.
  • NATURAL RUBBER (NR 70) (NRQX 70) TO DEF STAN 93-30 BLACK
  • NATURAL RUBBER (NRQX 40) TO DEF STAN 93-30 BLACK 36/45 HQ
  • NATURAL RUBBER (NRQX 70) TO DEF STAN 93-30 BLACK IRHD 66-75
  • NATURAL RUBBER 60 RED. S.G. IS 1.38
  • NATURAL RUBBER 60 WHITE. S.G. IS 1.42
  • NATURAL RUBBER BS1154 Z60 IRHD 56-65 BLACK
  • NATURAL RUBBER TO DEF STAN 93-30 EQUIVALENT GRADE QX 40 BLUE
  • NATURAL RUBBER Z40 TO BS 1154 IRHD 36-45 BLACK
  • NATURAL RUBBER Z90 TO BS1154:2003
  • NR 75.
  • NR 80. (Z 80)
  • NR 85
  • NR 90 (STYRENE RESIN) EQUIVALENT TO BR15
  • HSN401 GUM STOCK NATURAL RUBBER BLACK
  • NAT/NEO 50-60

(CR) Poly-chloroprene and neoprene© rubber

Neoprene or polychloroprene is a family of synthetic rubbers that are produced by polymerization of chloroprene. Neoprene exhibits good chemical stability, and maintains flexibility over a wide temperature range.

Stocked:

  • POLYCHLOROPRENE 40 GREY
  • POLYCHLOROPRENE 40 (NON ETU)
  • POLYCHLOROPRENE 50 GREEN NE
  • POLYCHLOROPRENE 50 (NON ETU) (C 50)
  • POLYCHLOROPRENE 50 RED (PCR 50)
  • POLYCHLOROPRENE 50 YELLOW
  • POLYCHLOROPRENE 50-55
  • POLYCHLOROPRENE 55/60
  • POLYCHLOROPRENE 60 NE GREY
  • POLYCHLOROPRENE 60 NE GREY (RAL 7036)
  • POLYCHLOROPRENE 60 NON ETU. BS2752 C60
  • POLYCHLOROPRENE 70 GREY (NE)
  • POLYCHLOROPRENE YELLOW 55 SHORE
  • NEOPRENE 40 NON-BLOOMING (WITHOUT WAX)
  • NEOPRENE 40 (NE CR QX40) NON TYP
  • NEOPRENE 60 (NE CR QX60) NON TYP
  • NEOPRENE C.40 (NON ETU)
  • NEOPRENE C.60 TO BS2752 (NON ETU)
  • NEOPRENE C.80 TO BS2752 BLACK
  • NEOPRENE NON ETU 76-85 BLACK BS2752 C80
  • NEOPRENE RUBBER TO BS2752 C50 BLACK IRHD 46-55
  • NEOPRENE RUBBER TO BS2752 C60 IRHD 56-65
  • NEOPRENE RUBBER TO BS2752 C70 IRHD 66-75
  • NEO POLYCHLOROPRENE BS2752 C40 BLACK NEOPRENE
  • NEO POLYCHLOROPRENE BS2752 C60 NE (NON ETU )
  • NEO POLYCHLOROPRENE BS2752 C70 NEOPRENE 66-75
PUR Polyurethane rubber

(PUR) Polyurethane rubber (Poly-U rubbers)

Stocked:

  • POLYURETHANE 50 BLACK
  • POLYURETHANE 50 WASHED OUT BLUE
  • POLYURETHANE 75 GREY
  • POLYURETHANE 95
  • POLYURETHANE 95 BLACK.
  • POLYURETHANE -70 GREEN BR/FP/04/08/034
  • POLYURETHANE 70 SAND STONE YELLOW
  • POLYURETHANE 75 BLACK
  • POLYURETHANE 95 BLUE
  • POLYURETHANE POLY U 95 PILLAR BOX RED
  • POLYURETHANE 60 (BLUE)
  • POLYURETHANE 70 (GREEN)
  • POLYURETHANE 85, BLACK
  • POLYURETHANE GRD 70/75 BLACK.
  • POLYURETHANE NOM HARDNESS 55 SHORE D BLACK (VERY HIGH HARDNESS)
  • POLYURETHANE RUBBER 90.
  • POLYU 70 GREY MOSS
  • POLY-U 70 RED
  • POLY-U 83 GREY
  • POLY-U 95 GREY
  • POLY-U 70 BLUE
  • POLY-U 90.
  • PU 60 BLACK
  • PU 70 GREEN

(ECO) Hydrin or Epichlorohydrin rubbe

Stocked:

  • EPICHLOROHYDRIN 45/55 SHORE
  • EPICHLOROHYDRIN 60 CONDUCTIVE
  • EPICHLOROHYDRIN 60 SHORE
  • EPICHLOROHYDRIN 55/65 GREY
  • HYDRIN RUBBER 70/75
  • HYDRIN RUBBER 85/95

(NBR) Nitrile rubber

NBR, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.

Stocked:

  • NITRILE 40/45 SHORE (GREY FOOD QUALITY)
  • NITRILE 60 SHORE (WHITE FOOD QUALITY) NON-STAINING
  • NITRILE BS2751 BA40 36-45 IRHD
  • NITRILE BA60 (NBR60) BS 2751
  • NITRILE (BS2751) BA80 76-85 IRHD
  • NITRILE 40/45 RED
  • NITRILE 65/75 BRIGHT RED
  • NITRILE 70 IRHD (LIGHT-GREY)
  • NITRILE DTD 5595A (GRD-70)
  • NITRILE RUBBER (BS2751 BA60) 56-65 HARDNESS
  • NITRILE RUBBER (BS2751 BA70) 66-75 HARDNESS
  • NITRILE PSLC/6 GRADE.D
  • NITRILE 70 Shore A
  • NBR 40/45 RED
  • NBR 40/45 (GREY F/Q)
  • NBR 50/55 94 A
  • NBR 55 DTD 5509/D
  • NBR 55/65 F.Q.WHITE
  • NBR 60 DTD 5594 GR 60
  • NBR 60 DTD 5595 A
  • NBR 60 (FQ) WHITE
  • NBR 70 (BA70) BS 2751:2001 (BA)
  • NBR 70 BLACK (FQ)
  • NBR 70 DTD 5594A GRADE 70
  • NBR 75/85 PEROXIDE CURE
  • NBR 80
  • NBR 80/90 (5595A)
  • NBR 90 (BA 90) NITRILE
  • NBR 90 DTD 5594A GRADE 90
  • NBR/HNBR 60 (GOOD TEAR)
  • NBR/PVC 45 (BLUE)
  • NBR/PVC 60 (BLUE)
  • LOW NITRILE (LOW NBR) 60 BLACK
  • LOW NITRILE (LOW NBR) 70

(PCR) PCR rubber

Stocked:

  • PCR 55 SHORE YELLOW NEO
  • PCR 60/70 IRHD BLACK
  • PCR 75/80 IRHD
  • PCR 78/83 (CONDUCTIVE)
  • PCR GOOD FLEX 80 SHORE
  • PCR 80 SHORE (CONDUCTIVE)
  • PCR 70 BLACK (+GRAPHITE)
  • PCR BS2752:2003 C80 BLACK

(VQM) Silicone rubber (moulding grades)

Silicone rubber is an elastomer composed of silicone—itself a polymer—containing silicon together with carbon, hydrogen, and oxygen. Silicone rubbers are widely used in industry, and there are multiple formulations.

Stocked:

  • SILICONE 60 BLUE PLATINUM CURED
  • GREEN SILICONE GRADE 60
  • SILICONE RUBBER LT50-02 (DCBP, BLACK)
  • SILICONE PINK GRADE 50
  • SILICONE GRADE 60 BLUE, BR/SL/WS.60.1.BL2
  • SILICONE TRANSLUCENT
  • SILICONE RUBBER MOULDING COMPOUND GRD.50 (FOOD-QUALITY)
  • SILICONE BLUE MOULDING COMPOUND 10 HARD
  • SILICONE 30/35 BLUE
  • SILICONE 35 TRANSLUCENT
  • SILICONE 35/40 BLACK
  • SILICONE 40 HIGH TEAR, BLUE
  • SILICONE 40 HT RED
  • SILICONE 40 RED OXIDE
  • SILICONE 40 RED RIO
  • SILICONE 40 TRANSPARENT
  • SILICONE 50 BLACK HIGH
  • SILICONE 50 DTD 5531A. GRADE 50 (WHITE)
  • SILICONE 50 H.S GREY FR
  • SILICONE 50 TRANSLUCENT
  • SILICONE 50 TRANSPARENT
  • SILICONE 50 WHITE (DTD 5531)
  • SILICONE 50 WHITE FODD QUALITY)
  • SILICONE 50/55 WHITE TRANSLUCENT
  • SILICONE 50/60 PLATINUM-CURE, RED IRON OXIDE
  • SILICONE 50/60 R10 RED
  • SILICONE 60 PLATINUM-CURE (BLUE)
  • SILICONE 60 HIGH TEAR (BLACK)
  • SILICONE 60 HIGH TEAR (LIGHT GREY)
  • SILICONE 60 PLATINUM CURE RED
  • SILICONE 60 RED RIO
  • SILICONE 60 RIO. (DTD 5582 A)
  • SILICONE 60 TRANSLUCENT HIGH TEAR
  • SILICONE 60 WHITE (DTD 5531 A) GRD 60
  • SILICONE 60 YELLOW (HIGH-TEAR)
  • SILICONE 70 BLUE DTD 5582
  • SILICONE 70 DRAB OLIVE GREEN
  • SILICONE 70 DTD 5531 WHITE
  • SILICONE 70 DTD 5531 WHITE
  • SILICONE 70 RED IRON OXIDE DTD 5582A
  • SILICONE 70 TRANS TRANSLUCENT
  • SILICONE 80 HIGH TEAR BLACK
  • SILICONE 80 TRANSPARENT
  • SILICONE 85 SHORE (BLACK NON-MARKING)
  • SILICONE (DTD 5531 A) GRD 70
  • SILICONE (DTD 5582 A) GRD 60
  • SILICONE GRADE 20 RED
  • SILICONE GRADE 50 RIO BR/SI/WS.50.1.RIO
  • SILICONE GRADE 60 DRAK GREY FIRE RETARDANT BR/SI/009
  • SILICONE GREY 50
  • SILICONE HIGH TEAR 60 (RED IRON OXIDE) DTD 5615 A
  • SILICONE RIO 70
  • SILICONE RUBBER 10 IRHD WHITE
  • SILICONE RUBBER 20 IRHD BLACK
  • SILICONE RUBBER 20 IRHD RED OXIDE (HIGH TEMPERATURE)
  • SILICONE RUBBER GP GRADE 50 BLACK (BR 15)
  • SILICONE RUBBER HIGH TEAR, TRANS GRADE 60
  • SILICONE RUBBER OIL RESISTANT DTD 5582 A GRADE 60 BLACK
  • SILICONE RUBBER PLATINUM CURED GRD 60 BLUE
  • SILICONE RUBBER, PLATINUM CURE GRADE 40 YELLOW
  • SILICONE CLEAR 40
  • SILICONE WHITE TO DTD 5531A GRD 70
  • WHITE SILICONE 10-20 SHORE A
  • WHITE SILICONE DTD 5531 A GRADE 80 A

(SBR) Styrene butadiene rubber

SBR rubbers are synthetic rubbers derived from styrene and butadiene. These materials have good abrasion resistance and good ageing stability when protected by additives. About 50% of car tyres are made from various types of SBR.

Stocked:

  • SBR RUBBER GRADE 50 BLACK
  • SBR RUBBER GRADE 60 BLACK
  • SBR RUBBER GRADE 70 BLACK
  • SBR RUBBER GRADE 80 BLACK
  • SBR/BR 70 ROLLER Grade

FKM, Viton and FPM

Viton Rubber FKM

(FKM) (FPM) Flurocarbon and Viton® and rubbers

Fluorocarbon elastomers are highly fluorinated carbon-based polymers and rubber used in applications to resist harsh chemical, temperature and ozone attack.

Stocked:

  • FKM GRADE E (DTD 5543 A) 71-80 SHORE
  • FKM 50. (DTD 5612 A) GRADE 50 SHORE
  • FKM 50/55 (BRIGHT-RED) HEAT-STABILISED RUBBER
  • FKM 60 GREEN FLUOROCARBON
  • FKM 60. DTD 5543B GRADE 60
  • FKM 60. DTD 5612A GRADE 60
  • FKM 70. DTD 5543B GRADE 70
  • FKM 75. AMS-R-83248C
  • FKM 75. DTD 5543A GRADE E
  • FKM 75. DTD 5612A GRADE 70 MILL-R-83248C (AMS-R-83248C)
  • FKM 85 IRHD (BRIGHT-RED)
  • FKM 90 FLUOROCARBON RUBBER
  • FKM GRADE 80 FLUOROCARBON RUBBER
  • FKM GLT GRADE
  • FLOUREL/FLUOROCARBON 80 GREY
  • FLUOROCARBON RUBBER AMS-R-83485, GRADE 70 – 80, BLACK
  • FLUOROCARBON RUBBER, GRADE 60, COLOUR GREEN
  • VITON 50 (DTD 5612 A)
  • VITON 50 RED
  • VITON 55/65 GREEN
  • VITON 65/70 GREEN
  • VITON 70 BLUE
  • VITON 70 BROWN
  • VITON B 60
  • VITON B GRADE70
  • VITON DTD 5543B 60 HARD
  • VITON DTD 5612 A 50 HARD
  • VITON DTD 5612A GRADE 80
  • VITON E60C – 60/65 BLACK
  • VITON GF 60
  • VITON GF 70 BLACK
  • VITON GF 70/75
  • VITON GF 90
  • VITON GF 90 BLACK
  • VITON GLT 70
  • VITON RUBBER TYPE GLT

All vitons® are the trade name of DuPont Performance Elastomers L.L.C.

When ordering, please state if the material you require needs to meet any of the following:
British Standards (BS), ISO, Def Stan (Defence Standard), DTD specifications, TS, ASTM, AMS, WRC, WRAS and SAE. Etc

Properties

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Cost Factor 1 1 2 2 2 6 15 40
Hardness Range (Shore A) 30 – 90° 40 – 95° 30 – 85° 30 – 90° 40 – 100° 40 – 80° 50 – 95° 40 – 80°
Colours Full Range Full Range Limited Full Range Limited Limited Limited Limited

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Maximum Continuous 75° 85° 130° 95° 100° 205° 205° 180°
Maximum Intermittent 105° 115° 150° 125° 130° 300° 300° 200°
Minimum Temperature -60° -55° -50° -40° -20° -60° -20° -60°

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Oxidation Fair Fair Excellent Very Good Good Excellent Excellent Excellent
Ozone & Weathering Poor Poor Excellent Very Good Fair Excellent Excellent Excellent

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
ASTM Oil No. 1 @ 20° Poor Poor Fair Excellent Excellent Excellent Excellent Excellent
ASTM Oil No. 1 @ 100° Poor Poor Poor Good Good Good Excellent Excellent
ASTM Oil No. 3 @ 20° Poor Poor Poor Good Excellent Good Excellent Excellent
ASTM Oil No. 3 @ 100° Poor Poor Poor Fair Good Fair Excellent Excellent

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
ASTM Fuel B @ 40° Poor Poor Poor Poor Fair Poor Excellent Fair

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Alcohol Good Good Good Good Good Good Good Good
Acetone Fair Fair Good Fair Poor Fair Unsuitable Unsuitable
Benzene Poor Poor Poor Poor Poor Poor Good Good

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Acids Fair Fair Good Good Good Fair Excellent Good
Bases Good Good Good Fair Fair Fair Good Fair

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Physical Strength Excellent Good Good Good Good Poor Good Poor
Compression Set Good Good Good Fair Good Good Good Good
Tear & Abrasion Resistance Excellent Good Good Good Good Poor Good Poor
Resilience Excellent Good Very Good Very Good Good Good Fair Fair

Full name Natural Rubber Styrene-butadiene rubber Ethylene Propylene Diene Monomer Neoprene/ chloroprene Nitrile Silicone Viton / Fluorocarbon Fluorosilicone
Code NR SBR EPDM CR NBR VMQ/SI FPM/FKM FVMQ
Permeability To Gases Poor Low Low Low Low Low Very Low Low
Electrical Strength Excellent Excellent Excellent Good Poor Excellent Good Excellent
Flame Resistance Poor Poor Poor Self – Extinguish Poor Good Self – Extinguish Self – Extinguish
Water Resistance Very Good Good Excellent Good Good Good Good Good

Blending silicone rubber

Blending process prior to injection moulding.

Contact us

enquiries@butserrubber.com

Tel: +44 (0) 1730 894034
Fax: +44 (0) 1730 894344

Butser Rubber Ltd
Mint Road
Liss
Hampshire
GU33 7BQ

US Division: www.butserrubbermoldings.com

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