Priced as of May 22, 2026
4.0(33 ratings)Buy on AmazonSaved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
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Prices may varyHealth score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
From the Safety Data Sheet
Full SDS ↗ (rev. 2019-12-05)GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
EyesSituationalMfr. SDS §8SkinSituationalMfr. SDS §8LungsSituationalMfr. SDS §8Ventilation—No PPE in published sourcesShow details for all categories ▾Hide details ▴
From the manufacturer’s Safety Data Sheet, Section 8
“No eye H-codes in SDS §2 — H319 is not classified at the mixture level. Aerosol delivery creates momentary mist at face height; situational minimum applies for incidental eye contact during connector service.”
— CRC
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“No skin H-codes in SDS §2 — H315 is not classified at the mixture level. SDS §8 uses boilerplate wash-hands language only. Incidental skin contact during connector pin work is the realistic pathway.”
— CRC
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“No inhalation H-codes at mixture level — H335 is absent from SDS §2. Silicone PDMS is non-volatile at application temperatures. Nitrogen propellant creates a brief spray burst; working in an enclosed garage warrants minimum situational tier per health.md. not_needed is schema-invalid for chemical products.”
— CRC
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
No PPE specified in published sources for ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
The Podium · Top 3 in Dielectric Grease
See the full ranking →This product ranks #3 of 6 in Dielectric Grease.
- Gold · #1AGSDielectric Silicone Grease CompoundCCT 7.3
- Silver · #2PermatexDielectric Tune-Up Grease, 3 ozCCT 7.3
- Bronze · #3You're hereCRCTechnician Grade Di-Electric Grease Compound (3.3 oz)CCT 7.2
CarCareTruth's Analysis
Last reviewed May 26, 2026
TL;DR Solid protection for spark plug boots, trailer connectors, and battery terminals with a precision aerosol applicator that beats a standard tube for control. Community data is thin at 33 reviews, so multi-season performance is plausible but not independently validated.
What it is and how it performs
A silicone-based grease in a 3.3 oz aerosol can with a finger-actuated applicator that deposits grease on connector pins and inside spark plug boots without flooding the contacts. A short burst coats the pin; a thin wipe seals the boot interior. The 200°C upper temperature rating covers most underhood locations, including coil-on-plug boots. The small review corpus means multi-season protection on high-exposure connectors is unconfirmed.
Who should buy this — and who should skip it
Best for spark plug service or trailer connector maintenance where aerosol control beats digging into a tube. Skip it if you only need a single-use dab for one boot or plug; a 3 g single-use packet from any auto parts store costs less and wastes nothing.
Safety and environmental impact
Signal word WARNING comes from the pressurized can (H280), not the chemistry. SDS §2 health hazards are Not classified: no skin, eye, or inhalation codes appear at the mixture level. PPE tiers are all situational: aerosol delivery warrants care in enclosed spaces. No Prop 65 substances listed in SDS §15. Silicone PDMS is not readily biodegradable; the leave-on pathway keeps environmental release minimal.
Frequently asked questions
Is CRC Technician Grade Di-Electric Grease Compound (3.3 oz) safe to use?▾
The Safety Data Sheet for CRC Technician Grade Di-Electric Grease Compound (3.3 oz) carries a WARNING signal word, with classified hazards including H280 (contains gas under pressure; may explode if heated). See the PPE breakdown above for use-case-specific guidance translated from the SDS hazard codes.
How does CRC Technician Grade Di-Electric Grease Compound (3.3 oz) score on CarCareTruth?▾
CarCareTruth scores CRC Technician Grade Di-Electric Grease Compound (3.3 oz) at 7.2 out of 10 on the composite CCT score, with a health sub-score of 9.5/10. The CCT score blends real-world effectiveness, ingredient health impact pulled from the manufacturer's safety sheet, and environmental footprint against a published category rubric. See the methodology link on this page for the full scoring breakdown.
What's in CRC Technician Grade Di-Electric Grease Compound (3.3 oz)?▾
Per the Safety Data Sheet ingredient disclosure: SDS §3 (Product Code 05113, Issue 2019-12-05): polydimethylsiloxane (CAS 63148-62-9) 80–<90%; amorphous fumed silica (CAS 112945-52-5) 5–<10%; nitrogen (CAS 7727-37-9) 1–<3%; polytetrafluoroethylene (PTFE, CAS 9002-84-0) 1–<3%.
From the manufacturer
Marketing copy from CRC, via Amazon. Not editorial.
- •Improves electrical performance by reducing arcing, voltage drop and other conditions
- •Also ideal for lubrication on plastic and rubber
- •Not VOC Compliant for California & OTC
- •Patented finger-actuated delivery system
- •This item is not for sale in Catalina Island
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Manufacturer specifications
- Material
- Silicone
- Brand
- CRC
- Package Information
- container
- Liquid Volume
- 3.3 Fluid Ounces
- Item Weight
- 3.2 ounces
- Brand Name
- CRC
- Recommended Uses For Product
- Electrical, Automotive
- Specific Uses For Product
- specific_uses_for_product
- Item Form
- Gel (Aerosol Delivery)
- Global Trade Identification Number
- 00078254051055
- Manufacturer
- CRC
- Unit Count
- 1.0 Count
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