McKee's 37 Graphene Ceramic Coating 5 Year / 10H Protectant
CarCareTruth Score
Mediocre, but it underperforms.
Priced as of May 12, 2026
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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.
No Safety Data Sheet on file.
CarCareTruth has not received a Safety Data Sheet from the manufacturer for this product. Hazard classification and PPE cannot be cited. Request an SDS from the manufacturer before use.
The Podium · Top 3 in Graphene Coating
See the full ranking →This product ranks #6 of 8 in Graphene Coating.Three above it ↓
CarCareTruth's Analysis
Last reviewed May 31, 2026
TL;DR McKee's 37 graphene line runs 1–2 years on daily drivers per community data — the label's 5-year claim is not community-confirmed. No independent evidence of water-spot or anti-static advantages over comparable ceramic coatings found. No SDS has been located for this product; the health score of 3.0 reflects that gap, not the actual chemistry.
What it is and how it performs
McKee's 37 Graphene Ceramic Coating is a wipe-on liquid that bonds to paint, wheels, glass, and chrome surfaces, curing into a protective layer over several hours. Apply using a suede applicator, section by section, through a 2–3 minute flash window; buff clean, then allow 6 hours before water contact. McKee's 37 graphene line community data from SVTPerformance puts real-world durability at roughly 1.5 years on a daily driver — well short of the 5-year label maximum. The anti-static and water-spot claims on the label are not confirmed by any community-documented comparisons to ceramic coatings. The community evidence base for this specific product is still thin.
Who should buy this — and who should skip it
Best for experienced home detailers already familiar with McKee's 37 products who want a wipe-on graphene coating with brand loyalty as a factor. Skip it if you need documented multi-year community durability data or confirmed graphene advantages — alternatives with larger review communities give you better data before you buy. The tight application protocol also makes this a poor fit for first-time coaters.
Safety and environmental impact
No SDS was located — health score of 3.0 reflects the absence of safety data, not the product's actual chemistry. We will update this section when an SDS is on file.
Frequently asked questions
Does McKee's 37 Graphene Ceramic Coating really last 5 years?▾
The label claims 5 years, but community data tells a different story. McKee's 37 graphene-line users on SVTPerformance report roughly 1.5 years of effective protection on a daily driver, including through Chicago salt-exposure winters. The specific MKGC-140 product has only a thin Amazon review base — not enough to independently confirm multi-year durability. Build expectations around the 1–2 year community range until more long-term independent follow-up accumulates.
Is a safety data sheet (SDS) available for this product?▾
No public SDS has been located for MKGC-140 as of May 30, 2026. McKee's 37 does not provide a public SDS portal; carcareco.com.au lists the product but has no SDS download link; msdsdigital.com confirms no McKee's 37 MKGC-series entries. The health score of 3.0 reflects this absence — not the product's actual chemistry. If you need an SDS for workplace compliance, the next step is a phone request to McKee's 37 at 1-844-852-5300 under OSHA HazCom 29 CFR 1910.1200 right-to-know rules for SKU MKGC-140.
Is the '10H hardness' claim verified?▾
No. '9H' and '10H' hardness claims are standard marketing language for graphene and ceramic coatings and have no independent community scratch-test verification for this product. The community review base is too thin for scratch-resistance follow-up data. The hardness dimension is scored on what community evidence confirms, not manufacturer claims.
Does this coating work on glass, wheels, and chrome?▾
McKee's 37 markets MKGC-140 for paint, wheels, glass, and chrome. The Amazon listing and brand site describe multi-surface use. There is no SDS to confirm chemical compatibility with specific substrates, and the thin Amazon review base does not contain enough detail to confirm community results on surfaces other than paint.
From the manufacturer
Marketing copy from McKee's 37, via Amazon. Not editorial.
- •Paint protection that lasts upwards of 5 years.
- •Part number: MKGC-140
- •Package Weight: 1.0 pounds
- •Item Package Weight: 1.0 pounds
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Manufacturer specifications
- Package Dimensions
- 8.19 x 4.49 x 2.8 inches; 10.4 ounces
- Item model number
- MKGC-140
- Date First Available
- December 7, 2021
- Manufacturer
- McKee's 37
- ASIN
- B09N7KKH98
- Best Sellers Rank
- See Top 100 in Automotive
- Brand Name
- McKee's 37
- UPC
- 850036259039
- Part Number
- MKGC-140
- Model Number
- MKGC-140
- Included Components
- Graphene Ceramic Coating (5 Year 10H Protectant for Paint, Wheels, Glass, Chrome), 4 fl. oz.
- Item Type Name
- Graphene Ceramic Coating (5 Year 10H Protectant for Paint, Wheels, Glass, Chrome)
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