The quiet fix: transparent gaskets that double as a 1 rubber grommet plug

If you’ve ever chased a rattle in a panel or fought dust ingress in an outdoor junction box, you’ll know why clear elastomer gaskets are having a moment. From EV harness passthroughs to lab instruments, engineers want to seal, cushion, and still see what’s going on behind the panel. That’s where FY Gasket’s Transparent Rubber Gaskets, made in No. 228 North Street, Gaobeidian City, Hebei Province, come in. They’re built like premium gaskets, but many teams spec them as a tidy, see-through 1 rubber grommet plug for unused cutouts and cable management.

What’s trending, and why transparency now?

Three things: IP-rated assemblies are moving downstream (even “basic” kiosks want IP65+), visual inspection without teardown saves service time, and regulatory pressure is pushing toward RoHS/REACH-compliant elastomers. In fact, we’re seeing designers swap opaque grommets for clear gaskets so they can confirm seating, cable bend radius, and moisture before closing the enclosure. Honestly, that simple visibility prevents a lot of field returns.

Product snapshot and specs

FY’s parts are custom-cut or molded and can be configured to act as a sealing washer, edge grommet, or an elegant 1 rubber grommet plug for knockout holes. Below is a typical configuration; real-world use may vary.

From compound to carton: how it’s made

Materials are mixed in-house, then tools are designed and cut for your geometry. Parts are compression or injection molded, vulcanized, deflashed, and batch-tested. Typical checks: IRHD/Shore A, tensile/elongation, compression set, dimensional CMM, and accelerated aging (ozone per ASTM D1149). Service life? In normal indoor use, I’d expect 8–10 years; harsh UV/salt fog environments may average 3–7, depending on compound and thickness.

Where they’re used

• EV battery and charger housings; cable passthroughs and knockout covers
• Outdoor LED signage and CCTV junctions (quick IP seal you can visually verify)
• Medical and lab equipment where clarity helps inspection or fluid tracing
• Food/packaging machinery with FDA silicone options
• Marine/HVAC panels as a neat 1 rubber grommet plug for unused ports

Customer sentiment? Many buyers say the clear finish makes installs faster and QC calmer—“you can literally see the seal.” Hard to argue.

Vendor comparison (quick take)

Mini case notes

Outdoor LED cabinet: Switched from opaque grommets to clear gaskets—technicians could verify cable seating; IP67 pass rate improved by ≈11% across 500 units.

Benchtop analyzer: FDA-grade silicone plugs allowed quick visual leak checks; assembly time per unit dropped about 6 minutes.

Compliance, testing, and the fine print

Compounds are RoHS/REACH compliant; UL 94 ratings available by formulation (ask early). Testing follows ASTM/ISO methods with CoA/PPAP support. If you’re targeting extreme UV or oils, say so—material selection is half the victory.

Authoritative citations

1. ASTM D2240 – Standard Test Method for Rubber Property—Durometer Hardness
2. ASTM D412 – Standard Test Methods for Vulcanized Rubber—Tension
3. ASTM D395 – Compression Set of Rubber
4. IEC 60529 – Degrees of protection (IP Code)
5. ISO 3302-1 – Rubber tolerances for products
6. UL 94 – Tests for Flammability of Plastic Materials
7. EU RoHS 2011/65/EU and REACH Regulation (EC) No 1907/2006