FKM Precompound

Catalog Number

ACMA00045156

Appendix

FKM Precompound
Items	FKM-30	FKM-40	FKM-42	FKM-38
Typical properties
Solubility	soluble in low molecular weight ketones, some ester
Chlorine Content, %	66	69	66	66
Specific Gravity	1.82	1.88	1.82	1.82
Mooney Viscosity ML 1+10 @ 121 °C	30	40	42	38
Recommended Vulcanization Formulation for test	Precompounds 100 phr MT Carbon Black (N 990) 30 phr Ca(OH)2 6 phr MgO 3 phr
Rheological Properties (moving die rheometer, 177°C, 6 min.)
ML, N.m	0.22	0.28	0.30	0.31
MH, N.m	1.95	1.66	2.92	2.29
T90	1'49"	1'57"	1'55"	1'55"
Ts2	0'59"	0'52"	0'55"	0'57"
Physical properties of vulcanizate
Press cure	6 min. @177°C
Post cure	24hr. @ 230 °C			24hr. @ 230°C / 12hr. @ 200°C
Tensile Strength, MPa	14.3	14.0	14.0	14.0 / 13.0
Elongation at Break, %	230	240	190	230 / 240
Hardness, Shore A	77	79	77	76
Compression Set after 70hr. @ 200°C aging, %	16	14	15	16
Applications	Excellent mold flow, good metal bonding and scorch safety Improved mold release, less mold fouling Recommended for compression or transfer molding of O-rings, gaskets.	Excellent mold release, good scorch safety. Recommended for sealing applications that require improved solvent resistance and permeation resistance to fuels, also for fuel tube extrusion	Excellent mold release, good scorch safety Recommended for compression or transfer molding of O-rings, gaskets.	Excellent mold flow, easier mold release, good scorch safety Recommended for sealing articles with multi-configuration

Notes

Processing
·Our precompounds could be mixed with conventional fillers and other aids by rubber processing equipment.
·Fillers and other additives should be mixed uniformly, then added in precompounds
Processing methods: compression molding, transfer molding. Additionally, F2462P and F2602AP could be used in extrusion, A361C could be used in injection molding

Packaging

Net 25kgs in cardboard cartons.

Custom Q&A

What is FKM Precompound?

FKM Precompound is a fluoroelastomer material that is cured with a bisphenol vulcanization system. It possesses excellent fluidity, heat resistance, oil resistance, and bonding properties.

What are the applications of FKM Precompound-30?

FKM Precompound-30 is recommended for compression or transfer molding of O-rings and gaskets. It offers excellent mold flow, good metal bonding, scorch safety, improved mold release, and less mold fouling.

What are the applications of FKM Precompound-40?

FKM Precompound-40 is recommended for sealing applications that require improved solvent resistance and permeation resistance to fuels. It is also suitable for fuel tube extrusion. It offers excellent mold release and good scorch safety.

What are the applications of FKM Precompound-42?

FKM Precompound-42 is recommended for compression or transfer molding of O-rings and gaskets. It offers excellent mold release and good scorch safety.

What are the applications of FKM Precompound-38?

FKM Precompound-38 is recommended for sealing articles with multi-configuration. It offers excellent mold flow, easier mold release, and good scorch safety.

What properties does FKM Precompound possess?

FKM Precompound possesses excellent fluidity, heat resistance, oil resistance, and bonding properties.

What are the differences between the four kinds of FKM precompounds?

The four kinds of FKM precompounds are different in processing methods and applications.

What are the recommended processing methods for FKM Precompound-30 and FKM Precompound-42?

FKM Precompound-30 and FKM Precompound-42 are recommended for compression or transfer molding.

What are the recommended applications for FKM Precompound-40?

FKM Precompound-40 is recommended for sealing applications that require improved solvent resistance and permeation resistance to fuels, as well as for fuel tube extrusion.

If you have any other questions or need other size, please get a quote.

※ Please kindly note that our products are for research use only.