8 Gauge Heavy Duty Vinyl Butt Splices 5 Pieces Email Bag of 5 Vinyl Insulated Butt Splice Connectors for 8 AWG Wire. Part #: WT-424005 Part #: WT-424005 Quantity Price ea. 1 + $6.08 6.08 Back to: Vinyl Insulated Butt Connectors / Splices Ask a question about this product Yellow Vinyl Butt Splices 12-10 Gauge 100 Pieces 8 Gauge Heavy Duty Vinyl Butt Splices 100 Pieces Description 5 Piece package of red vinyl (PVC) insulated butt splice connectors. Rated for use up to 600 volts. Temperature rating up to 221°F (105°C). For splicing 8 gauge wire. Flared wire entry for easy wire insertion. Made in the USA.