Federal officials said Friday more than 1.5 million Fisher-Price child safety seats are being recalled because they failed safety standards for flammability.

The company voluntarily agreed to the recall, government safety officials said. The safety seats are attached to rear automobile seats to provide extra protection for children in the event of accidents.The foam pads in the seats of about 1 million model 9100 and 524,000 model 9101 seats made by Fisher-Price between 1985 and 1989 do not meet the federal regulations on flammability, the National Highway Traffic Safety Administration said.

The agency said it had received no complaints of fire-related injuries involving the seats.

Owners of the affected seats will be furnished with a free replacement pad that meets the safety standards. Instructions for installation will be included, the agency said.

The recall resulted from company tests on the foam pads in the seats. During testing, the foam used by Fisher-Price burned faster than the rate allowed by safety standards, the NHTSA said. Fisher-Price will notify owners whose names are on warranty cards filed with the company, the agency said.