He subsequently established himself as number one goalkeeper and also starred in United's 1991 European Cup Winners' Cup final win over Barcelona in Rotterdam.
Tottenham director of football David Pleat - who managed Sealey at Luton - told Sky Sports:
"He came to me from Coventry and was superb in the dressing room. He was very popular with his team-mates and worked tremendously hard in training.
"He took that through to coaching and had a superb career and our thoughts have to be with his sons and his family."