Tongan tight-head Puafisi, 27, has agreed a contract for another season with Sctolandʻs Glasgow Warriors.
Head coach Gregor Townsend said: “Sila has played regularly for us this season and there’s a lot more to come.”
Puafisi, who has 20 caps for his country and played at last summer’s Rugby World Cup, joined the Pro12 club last summer from Gloucester and has been ever present in the Warriors front-row this season.
Earlier this month, the Warriors signed tight-head Jarrod Firth on a two-and-a-half-year deal from Counties Manukau in New Zealand and Townsend thinks that retaining Puafisi ensures strong competition for places next season.
“Sila integrated so quickly after the Rugby World Cup it was if he’d been a Warrior for the past 10 years,” said Townsend.
Puafisi was pleased with the way he had settled in Glasgow.
“My wife and son really enjoy life in Scotland, so I’m looking forward to the rest of the season to see what we can achieve as well as next year too”, he said.
