Material page for anaerobic threadlockers and thread sealants in EPDM (ethylene-propylene-diene rubber, typically 70 Shore A). The sizes below are the ones we supply; there is no published dimensional standard for this article, so the table rather than a standard number is what to quote. Corrosion behaviour is excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil and the service range is approx. -45 °C to +150 °C.
Why Choose EPDM for Anaerobic Threadlockers and Thread Sealants
The water, steam and outdoor-weathering elastomer. For anaerobic threadlockers and thread sealants, this matters when excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil is the primary requirement.
Mechanical & Physical Properties
| Grade designation | ethylene-propylene-diene rubber, typically 70 Shore A |
|---|---|
| Magnetic response | Non-magnetic |
| Service temperature | approx. -45 °C to +150 °C |
| Corrosion characteristic | Excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil |
Corrosion Behavior in Service
Carbon and alloy steel anaerobic threadlockers and thread sealants require a coating for corrosion protection. Zinc plating (with or without passivation) is the most common; hot-dip galvanizing is used for outdoor structural service; black-oxide is mainly a tarnish-prevention finish for tool-room use.
Comparable Grades
For anaerobic threadlockers and thread sealants, consider NBR for mineral oil and hydraulic service, which EPDM does not tolerate, or silicone for a wider temperature range in static duty. Elastomer selection is decided by the medium, the temperature range and whether the seal is static or dynamic — not by strength.
Sizes of Anaerobic Threadlockers and Thread Sealants Available in EPDM
| Grade | Removal | Typical use | Notes |
|---|---|---|---|
| low strength | hand tools | set screws, adjusting screws, small fasteners | up to about M12 |
| medium strength | hand tools | general assembly, machine screws | the usual default |
| high strength | heat and hand tools | studs, permanent assemblies | not for parts serviced in the field |
| thread sealant grade | hand tools | tapered pipe threads, hydraulic fittings | seals rather than locks |
| retaining compound | heat | bearings, bushes, cylindrical fits | not a thread product |
Dimensions are independent of the material: every size above is available in EPDM.
Custom manufacturing · Made to drawing
Need this seal in a grade that is not listed?
Epdm is one of the grades the catalog describes. A special seal is almost always a compound change rather than a size change — the same dimensions in a material that survives the medium.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
