< La Ceinture de chasteté

• The Chastity Belt
• La Cintura di castità Italy, Stars Pictures
• The Guard of Chastity Germany, S.A.P.

• Carole Gaël
• Joy Karin's
• Solange Hop as Gyn Seng, seems to play a character called Solange

Males -

• Roberto Malone
• Gil Lagardère as Dominique St Clair
• Philippe Soine
• Alain Lyle
• Yves Baillat, uncredited
• Jerome Proust
• Robert Porte, non-sex, plays the waiter with the ponytail

Carole Gaël is made to wear a chastity belt by jealous husband Roberto Malone. There are lots of sexual encounters among the members of the cast, some while Carole Gaël teases the men involved using the fact that she is wearing the chastity belt.

Thanks to skin flick for extra information.