OVERVIEW
Farrprene EF501AV is a versatile medium-hardness compound for general-purpose flexible parts and two-shot overmoulding. Supplied as a natural filled grade optimised for extrusion, it pairs the soft-touch feel of rubber with the clean, fast processing of a thermoplastic - no curing, fully re-meltable scrap.
The grade delivers a tensile strength of 5 MPa, elongation at break of >800%, and a specific gravity of 1.210. A balanced melt flow (MFI 6.9 g/10 min at 190°C/5 kg) suits a wide processing window. UV Stabilized · Heat Stabilized · Silky Touch.
This is a SEBS-based compound. SEBS is the hydrogenated form of SBS: removing the double bonds from the mid-block gives it substantially better resistance to UV, heat and oxidation, which is why it is the usual choice for parts that see sunlight, warm service or a long design life.
At 19 g/10 min (230°C/5 kg) it flows more freely than a typical extrusion grade, which helps on complex dies but leaves less melt strength for tall unsupported sections. Its specific gravity of 1.210 reflects the mineral filler loading, which is what buys the dimensional stability and cost position of a filled grade.
TECHNICAL PROPERTIES
- HARDNESS
- 50 Shore A
- TENSILE STRENGTH
- 5 MPa
- ELONGATION AT BREAK
- >800%
- SPECIFIC GRAVITY
- 1.210
- MFI (230°C / 5 KG)
- 19 g/10 min
- MFI (190°C / 5 KG)
- 6.9 g/10 min
- APPEARANCE
- Natural
Typical average values from a limited sample set; not a formal specification. Request the signed datasheet for current values.
TYPICAL APPLICATIONS
- Two-shot overmoulding onto PP/PE and rigid substrates
- General-purpose seals, grips and flexible housings
- Cable jacketing and strain reliefs
- Construction profiles, gaskets and weatherstripping
- Consumer products, soft-touch overmoulds and grips
PROCESSING
- Suited to profile, sheet and tube extrusion lines with conventional single-screw setups.
- Filled formulation tuned for cost-efficiency and dimensional stability.
- Heat-stabilised: the additive package is intended to limit degradation during processing and repeated re-melting of regrind.
- UV-stabilised for components exposed to sunlight. Real service life depends on exposure, colour and section thickness, so qualify an outdoor part against its actual duty cycle.
- Silky-touch surface: formulated for a low-friction, non-tacky feel on visible and hand-contact surfaces.
- SEBS-based: the hydrogenated backbone gives better UV, thermal and oxidative stability than an SBS compound.
- Colour-matchable and re-processable - production scrap can be re-melted and reused.