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INSULATED TEFZEL BUTT SPLICE 12-10
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- Splices
- Product Type:
- Fluoropolymer Insulated Butt Splice
- Standards:
- UL E9809
- Temperature Range:
- 150 °C
- Voltage Rating:
- 600 V
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Copper
Sta-Kon RCCT21 – Frequently Asked Questions
1) What wire sizes does the Sta-Kon RCCT21 butt splice accept?
The RCCT21 is a 12-10 AWG butt splice, so it joins two conductors in the 12 to 10 AWG range. The yellow insulation is the standard color code for that range, which makes it easy to spot the right barrel in a mixed bin on the truck. Barrel is copper.
2) Can I use a Tefzel butt splice in a high heat location like near a boiler or engine compartment?
The RCCT21 carries a 150 C temperature rating, which is well above the 105 C ceiling on ordinary nylon or vinyl insulated splices. That is what the fluoropolymer (Tefzel) insulation buys you: engine compartments, boiler rooms, kiln and oven wiring, rooftop equipment. Voltage rating is 600 V.
3) Is the Sta-Kon RCCT21 splice UL listed?
Yes. The RCCT21 is covered under UL file E9809 and rated 600 V, which is what an inspector or a spec writer on an institutional job will ask for.
4) Do I need a special crimper for the RCCT21, or will my standard insulated terminal tool work?
It crimps like any insulated butt splice in the 12-10 AWG range, so a ratcheting insulated terminal crimper with the yellow 12-10 nest is the tool. Crimp both ends, one conductor per side. A plain plier style crimper will close the barrel but a controlled cycle tool is what gets a repeatable crimp on a copper barrel this size.
5) Is a Tefzel butt splice better than a heat shrink splice for a wet or outdoor location?
Different jobs. The RCCT21 is a fluoropolymer insulated splice built for heat, 150 C, not for sealing. If the splice sits in standing water, a direct burial location, or anywhere it needs a moisture seal, use an adhesive lined heat shrink butt splice instead. For dry high temperature runs, the Tefzel barrel is the one that survives.
6) Can I splice a 12 AWG wire to a 10 AWG wire with one of these?
Yes, as long as both conductors fall in the 12-10 AWG range the barrel is sized for. The RCCT21 accepts 12 or 10 on either end, so going from a 12 AWG branch to a 10 AWG feeder is a legitimate use. Stepping outside that range, say 14 AWG on one side, needs a different splice size.
7) Is the Sta-Kon RCCT21 made in the USA for a government or federal job?
Country of origin on the RCCT21 is the United States, which is what procurement needs for domestic sourcing language on federal, military, and many institutional contracts.
How fast can I get the Sta-Kon RCCT21 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sta-Kon RCCT21 come with a warranty?
Absolutely. The Sta-Kon RCCT21 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sta-Kon RCCT21?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Sta-Kon RCCT21 from ZenSupply?
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and
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