Copper Wire Connector Manufacturer Overview
What is a jelly crimp connector?
A jelly crimp connector is the industry field name for a gel-filled IDC splice connector used to join supported solid copper telephone wires without stripping the insulation. The name comes from the silicone gel inside the connector body and the crimping action used to install it, but the product itself is a connector, not a crimping tool. These gel-filled wire connectors are also known as gel-filled IDC splice connectors, gel crimps, or button connectors, depending on the region and buyer habit. Mintel's jelly crimp range covers UY, UY2, UR, UR2, and UB2A connector models for copper telecom cable repair, field splicing, and qualified low-voltage wiring applications.
How it works
Gel-filled IDC splice mechanism
Gel-filled wire connectors combine two mechanisms in one compact connector body: insulation displacement contact and gel sealing. Inside the connector, metal contacts cut through the wire insulation during crimping and make electrical contact with the copper conductor. No pre-stripping or soldering is required. The connector body contains non-conductive gel that surrounds the splice area after crimping. The gel helps reduce moisture exposure and corrosion risk in suitable outdoor, humid, or enclosed splice environments. Compatible crimping tools can be discussed for bulk or project orders.
- IDC contact: metal contacts cut through insulation during crimping.
- Gel seal: gel remains around the splice area after crimping.
- No pre-stripping: supported solid copper wires are inserted directly into the connector.
- Compact format: useful for telecom field repair, closures, pedestals, and service repair kits.
Advantages
Why gel-filled wire connectors are standard in telecom repair
Gel-filled wire connectors are widely used because copper telecom splices often need to be made quickly in field conditions. Installers need connectors that are compact, easy to carry, quick to crimp, and suitable for moisture-prone splice points.
- No stripping needed: IDC contacts cut through insulation during crimping.
- Moisture-resistant splice: gel helps protect the splice area from humidity and condensation.
- One-step installation: insert wires and crimp the button; no soldering, heat shrink, or tape.
- Compact connector body: suitable for closures, pedestals, wall cavities, and service repair kits.
- Color-coded families: yellow for UY/UY2, red for UR/UR2, and blue for UB2A bridge tap requirements.
Models
Gel-filled IDC splice connector models
Mintel manufactures five public jelly crimp connector models for copper telephone wire splicing. UY, UY2, UR, and UR2 have dedicated model pages. UB2A is included on this category page and can be quoted together with the other models.
- UY: 2-wire IDC splice, 0.4-0.7 mm / 26-22 AWG, yellow, gel-filled.
- UY2: enhanced 2-wire IDC splice, 0.4-0.9 mm / 26-19 AWG, yellow, gel-filled.
- UR: 2-wire or 3-wire IDC splice, 0.4-0.9 mm / 26-19 AWG, red, gel-filled.
- UR2: enhanced 2-wire or 3-wire IDC splice, 0.4-0.9 mm / 26-19 AWG, red, gel-filled.
- UB2A: bridge tap IDC connector, 0.4-0.9 mm / 26-19 AWG, blue, gel-filled.
Model selection
Model pages for UY, UY2, UR, and UR2
UY connector Yellow 2-wire gel-filled IDC splice for compact copper telephone wire repair. View page 
UY2 connector Enhanced yellow 2-wire gel-filled IDC splice, with UY2D handled as a related non-gel variant. View page 
UR connector Red gel-filled IDC splice for 2-wire or 3-wire telephone repair and tap splice work. View page 
UR2 connector Enhanced red gel-filled IDC splice for 2-wire or 3-wire UR2-format requirements. View page 
UB2A bridge connector Blue gel-filled bridge tap connector included in the jelly crimp range. Comparison
Model and connector comparison
| Drawing | Model | Connector type | Wires | Wire range | Color | Gel-filled | Page | Typical use |
|---|---|---|---|---|---|---|---|---|
 | UY | IDC splice | 2-wire | 0.4-0.7 mm / 26-22 AWG | Yellow | Yes | /uy-connector/ | Compact pair splicing and telephone wire repair |
 | UY2 | Enhanced IDC splice | 2-wire | 0.4-0.9 mm / 26-19 AWG | Yellow | Yes | /uy2-connector/ | UY2 format requirements and yellow 2-wire splice work |
 | UR | IDC splice / tap splice | 2-wire or 3-wire | 0.4-0.9 mm / 26-19 AWG | Red | Yes | /ur-connector/ | Repair, tap splice, and red button connector requirements |
 | UR2 | Enhanced IDC splice / tap splice | 2-wire or 3-wire | 0.4-0.9 mm / 26-19 AWG | Red | Yes | /ur2-connector/ | UR2 format requirements and red 2-3 wire splice work |
 | UB2A | Bridge tap connector | Bridge tap | 0.4-0.9 mm / 26-19 AWG | Blue | Yes | Included here | Bridge tap requirements and multi-model sourcing |
Specifications
Quotation checklist
| Quotation item | What to confirm |
|---|---|
| Product model | UY, UY2, UR, UR2, UB2A, or UY2D |
| Wire specification | Conductor size, insulation diameter, solid copper requirement, and application environment |
| Packaging | Neutral packaging, bulk pack, OEM packaging, or custom packaging request |
| Destination market | Country, target buyer type, and any documentation requirements |
| Compliance | RoHS and REACH documentation can be arranged for qualified orders |
Yellow series
UY and UY2: yellow 2-wire gel-filled connectors
UY and UY2 are both yellow gel-filled 2-wire IDC splice connectors. UY is the compact format for standard two-wire telephone splice work. UY2 is the enhanced yellow format for buyers who specify UY2 in their existing product system or procurement list. UY2D belongs to the UY2 family but is treated as a related non-gel variant. Buyers who need UY2D should mention it clearly in the inquiry.
- UY: compact yellow 2-wire gel-filled IDC splice.
- UY2: enhanced yellow 2-wire gel-filled IDC splice.
- UY2D: related non-gel UY2 family variant, quoted separately by specification.
Red series
UR and UR2: red 2-wire or 3-wire gel-filled connectors
UR and UR2 are red gel-filled IDC splice connectors for 2-wire or 3-wire repair and tap splice requirements. UR is the standard red connector family, while UR2 is the enhanced red format when the buyer specification calls for UR2. Because both models may be used for similar repair or tap splice work, buyers should confirm the required model name, wire count, wire gauge, and application environment before quotation.
- UR: red gel-filled IDC splice for 2-wire or 3-wire repair and tap splice work.
- UR2: enhanced red gel-filled IDC splice for 2-wire or 3-wire UR2-format requirements.
- Choose by model specification, wire count, wire size, and existing installation habit.
Bridge connector
UB2A bridge tap connector
UB2A is a blue gel-filled bridge tap connector in the jelly crimp range. It is used when a buyer needs a bridge tap style IDC connector rather than a standard yellow or red splice connector. It allows tapping into an existing wire run without cutting the through-wire. UB2A does not need a separate product page, but buyers can include UB2A together with UY, UY2, UR, or UR2 in one inquiry.
- Blue gel-filled bridge tap connector.
- Included in the jelly crimp connector range.
- Suitable for buyers sourcing multiple telecom splice connector models together.
Applications
Where jelly crimp connectors are used
Mintel gel-filled wire connectors are used across copper telecom and qualified low-voltage networks.
- Telephone cable installation and repair: UY and UR style connectors support copper telephone line pair splicing, fault repair, and new service connections.
- Outdoor and humid splice environments: gel-filled connectors help protect suitable splice points from humidity and condensation.
- Pole-to-premises wiring: compact connectors are useful for service connection and field repair work.
- Multi-pair telecom maintenance: UY2 and UR2 support enhanced model requirements in existing telecom connector systems.
- Selected low-voltage wiring: some IDC connectors in this range may be suitable for low-voltage alarm or security sensor wiring when wire size and application match the connector specification.
Related connector categories
Other Mintel connector categories
Telephone Cable Connectors Inline, drop wire, self-stripping tap splice, and modular connectors for copper telecom cable splicing and distribution work. 
Picabond Connectors Modular crimp splice connectors and compatible crimping tools for multi-pair copper telecom cable work. 
Low Voltage Wire Splice Connectors 314-type IDC splice connectors with silicone grease sealing for selected no-stripping, solder-free low-voltage wiring applications. Factory supply
Why buyers source jelly crimp connectors from Mintel
Mintel was founded in 2012, building on family manufacturing know-how since 1986. The company produces gel-filled IDC splice connectors and related copper wire connector products for telecom and selected low-voltage networks from a single factory source.
- Direct factory communication for model selection and quotation.
- Long-term production experience in copper telecom connector manufacturing.
- Bulk supply and distributor order support.
- Neutral packaging for smaller or trial orders where suitable.
- Factory-direct OEM packaging support available by project discussion.
- RoHS and REACH documentation can be arranged for qualified orders.
FAQ
Buyer questions
What is a jelly crimp connector?
A jelly crimp connector is a gel-filled IDC splice connector for joining supported solid copper telephone wires without stripping. Jelly crimp is the common field name; the product is a connector, not a crimping tool. It may also be called a gel-filled wire connector, gel crimp, button connector, or IDC splice connector.
How do gel-filled wire connectors work?
The wire is inserted into the connector, then the button is crimped. The IDC contact cuts through the insulation and touches the copper conductor, while gel remains around the splice area to help reduce moisture exposure.
How do you use jelly crimp connectors?
Insert supported solid copper wires fully into the connector ports, crimp the button with suitable pliers or a compatible tool, and check that the connector is fully pressed. No wire stripping or soldering is required.
Are jelly crimps waterproof?
Gel-filled connectors are moisture-resistant, not fully submersible. Final protection depends on the connector model, wire fit, installation method, and the surrounding closure or cable system.
What wire sizes do jelly crimp connectors support?
UY supports 0.4-0.7 mm / 26-22 AWG solid copper wire. UY2, UR, UR2, and UB2A support 0.4-0.9 mm / 26-19 AWG solid copper wire. Buyers should confirm conductor size, insulation diameter, and application before ordering.
What is the difference between UY and UY2 connectors?
Both are yellow 2-wire gel-filled IDC splice connectors. UY is the compact format, while UY2 is the enhanced yellow format for buyers who specify UY2.
What is the difference between UR and UR2 connectors?
Both are red gel-filled IDC splice connectors for 2-wire or 3-wire repair and tap splice requirements. UR2 is the enhanced red format when the buyer specification calls for UR2.
What is a UB2A connector?
UB2A is a blue gel-filled bridge tap connector included in Mintel's jelly crimp connector range. It allows tapping into an existing wire run without cutting the through-wire and can be quoted together with UY, UY2, UR, and UR2.
Can I send one inquiry covering several connector models?
Yes. Include model names, estimated quantities, wire specifications, packaging needs, destination country, and any documentation requirements.
Connect With Ease
Send your connector requirement
Share the model, estimated quantity, wire specification, packaging preference, and destination country. Mintel can review the requirement for factory direct supply.