A man has died after injecting silicone into his genitals as part of a body manipulation fetish.

Jack Chapman, also known as Tank Hafertepen, had posted pictures showing his swollen genitals, a side effect of silicone injections.

However, the practice is highly dangerous – and the 28-year-old Australian’s death certificate listed ‘silicone injection syndrome’ as a cause of death.

Mr Chapman and Dylan Hafertepen became involved with a body manipulation fetish (Picture: Facebook)

Jack Chapman had ‘silicone injection syndrome’ listed as a cause of death (Picture: Facebook)

He also died from lung problems.

Mr Chapman became involved in master-slave relationships within the gay community while living in San Francisco and Seattle.

His mother Linda Chapman blames Dylan Hafertepen, a popular gay blogger, for her son’s death.

Jack Chapman was just 28 when he died (Picture: Ten)

Jack Chapman, Dylan Hafertepen and friends (Picture: Facebook)

He is said to have introduced Mr Chapman to body manipulation, while his mother found a contract apparently detailing the pair’s relationship.

Under the contract, Mr Chapman took Mr Hafertepen’s surname, signed over his salary and had to wear a chain around his neck.

Paying tribute to Mr Chapman, Mr Hafertepen wrote: ‘If he was my world, I was his sun; he made me feel like the centre of his universe.

Jack Chapman and Dylan Hafertepen and their friends (Picture: Facebook)

Jack’s mother Linda Chapman has blamed Dylan Hafertepen for her son’s death (Picture: Facebook)

‘To say I ‘miss him’ is an understatement. Core to his identity was his service. He lived to help people, and was happiest helping those he loved.

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‘I love you, Tank. My best friend, partner, my world… my pup.’

He denied forcing Mr Chapman to inject silicone into his body.