UL 3172 OEM Wire | 200°C 600V for Vietnam Appliance Factory

UL 3172 200°C Braid Silicone Rubber Wire for Vietnam Export

UL 3172 is an extruded silicone rubber insulated wire with one or more glass or aramid fibrous braid outer coverings, rated 200°C and 600V AC under UL AWM Style 3172, produced under UL Follow-Up Service File No. E333030. UL 3172 covers a conductor range from 26 AWG to 18 AWG in solid or stranded construction. The silicone rubber insulation wall is 30 mils minimum average thickness and 27 mils minimum at any point — the same insulation construction as UL 3071 and UL 3135 — but UL 3172 adds one or more glass or aramid fibrous braid outer coverings over the silicone rubber insulation as a non-extruded covering. This braid covering is the defining construction feature of UL 3172 and the reason it is specified instead of UL 3071 or UL 3135 in applications where the bare silicone rubber surface is insufficient for the mechanical environment at the wire routing location.

Silicone rubber insulation, while providing excellent thermal performance from −60°C to 200°C and maintaining flexibility throughout its rated temperature range, has a relatively soft surface compared to PVC and fluoropolymer insulations. At routing contact points — where the wire bears against a metal edge, passes through a conduit entry, is secured under a cable clip, or is routed through a tight passage in the equipment structure — the soft silicone rubber surface can be abraded over repeated assembly and maintenance cycles or under sustained contact pressure. The glass or aramid fibrous braid of UL 3172 provides a hard, abrasion-resistant outer layer that protects the silicone rubber insulation at these mechanical contact points while the silicone rubber insulation beneath continues to provide the 200°C thermal performance and electrical insulation that is the fundamental reason for specifying silicone rubber wire at elevated temperature applications.

Vietnamese industrial equipment OEMs and export equipment manufacturers assembling products for UL listing and for export to international markets specify UL 3172 as dây silicone bện xuất khẩu (braided silicone wire for export) or dây silicone bện sợi thuỷ tinh xuất khẩu (glass braid silicone wire for export) for internal wiring in applications where the mechanical robustness of the braided construction is required alongside the 200°C thermal performance of the silicone rubber insulation. CableApex exports UL 3172 factory-direct CIF Ho Chi Minh City from Yangzhou.

Product Specifications — UL 3172

UL 3172 vs UL 3135 vs UL 3071 — When Braid Covering is Required

Applications in Vietnam

Industrial oven and heating equipment wiring at abrasion-risk routing points (Vietnam — export OEMs)

Vietnamese industrial equipment OEMs assembling ovens, dryers, and heating equipment for export to North American and international markets under UL listing specify UL 3172 for the internal wiring in 26–18 AWG at routing locations where the wire bears against metal edges, passes through unlined conduit entries in the equipment frame, or is secured with metal cable clips that would abrade the bare silicone rubber surface of UL 3071 or UL 3135 over the equipment’s service life. The glass or aramid fibrous braid of UL 3172 absorbs the abrasion loading at these contact points, protecting the silicone rubber insulation from surface damage that could compromise insulation integrity over the 10–15 year service life expected of industrial equipment exported to international markets.

Vietnamese equipment OEMs submitting products for UL listing specify UL 3172 as dây silicone bện xuất khẩu for the wiring at abrasion-risk routing locations — the glass or aramid braid construction satisfying both the 200°C silicone rubber insulation requirement and the mechanical robustness requirement at routing contact points that UL inspectors would flag if bare silicone rubber wire were used at contact-bearing routing points in equipment submitted for listing.

Thermocouple and temperature sensor lead wiring with braid protection (Vietnam — equipment manufacturing)

Vietnamese industrial equipment manufacturers and heating equipment OEMs assembling ovens, heat treatment equipment, and high-temperature process equipment for export specify UL 3172 in the fine AWG range (26–22 AWG) for thermocouple lead wiring and temperature sensor connections inside equipment enclosures where the sensor lead routing passes through tight passages in the equipment refractory or insulation structure. The glass or aramid fibrous braid of UL 3172 provides mechanical protection for the fine silicone rubber insulated conductor as it passes through these tight routing passages — where bare silicone rubber wire in 26–22 AWG would be susceptible to surface damage from contact with the sharp edges of refractory cutouts and insulation panel penetrations in the equipment structure.

Motor lead connections with abrasion exposure at conduit entries (Vietnam — motor manufacturing)

Vietnamese motor manufacturing and motor repair operations assembling or rewinding electric motors for export specify UL 3172 for the external motor lead connections in the 18–22 AWG range — the section of lead wire from the motor terminal box to the equipment wiring harness that passes through the motor terminal box conduit entry where the wire bears against the conduit edge under the tension of the lead connection. The glass or aramid braid of UL 3172 protects the silicone rubber insulation at the conduit entry contact point, where bare silicone rubber wire would show visible surface abrasion after repeated installation and removal cycles during scheduled motor maintenance in exported equipment operating in international markets.

High-temperature flexible lead with abrasion protection (Vietnam — industrial equipment export)

Vietnamese industrial equipment manufacturers assembling heating platens, hot press equipment, and laminating machines for export specify UL 3172 in the 18–22 AWG range for flexible lead connections at heated platen terminals — where the lead wire is flexed each time the platen opens and closes in the press cycle, and where the lead surface contacts the platen edge guide at the flex point during each cycle. In continuous production operation with hundreds of press cycles per day, the accumulated flex and contact abrasion at the platen lead routing point exceeds the mechanical durability of bare silicone rubber wire in the 26–18 AWG conductor range over the equipment’s exported service life. The glass or aramid fibrous braid of UL 3172 provides the mechanical protection at this flex and contact point while the silicone rubber insulation maintains the 200°C thermal performance required at the heated platen temperature.

Additional applications in Vietnam

• Commercial kitchen equipment export — Vietnamese commercial oven and food processing equipment manufacturers where internal wiring at abrasion-risk routing locations requires braided silicone rubber in 26–18 AWG for UL listing submission
• Industrial robot wiring in high-temperature work envelopes — Vietnamese automotive and electronics assembly plant robot installations where lead wiring in 26–18 AWG passes through heated zones with abrasion risk at routing guides
• Compact industrial test furnace sensor and power wiring — Vietnamese materials testing laboratory equipment where 26–18 AWG braided silicone rubber is required for mechanical durability at terminal connections in exported equipment
• Replacement wiring in imported heating equipment — Vietnamese maintenance operations replacing original braided silicone rubber wire in imported European and Japanese heating equipment where the glass or aramid braid construction of the original wiring must be matched

Key Features

Ordering Information

Specify AWG (26–18 AWG), conductor type (solid or stranded), braid type (glass or aramid), and quantity. MOQ 500 m per AWG. Mixed AWG orders accepted. UL 3172 compliance documentation and RoHS Declaration supplied with every order. For bare silicone rubber without braid covering in the same temperature class, see UL 3135 (26–12 AWG, totally enclosed) or UL 3071 (18–13 AWG). Sample from 10 m.

Why CableApex for Vietnam

CableApex manufactures UL 3172 braid silicone rubber wire under UL Follow-Up Service File No. E333030 in Yangzhou, China. Factory-direct export to Vietnam — CIF Ho Chi Minh City, 10–14 day transit. Full UL compliance documentation for equipment OEM qualification and export product listing. No distributor margin on factory-direct orders. Contact us within 24 hours.

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