PENNSYLVANIA LAWS AND RESEARCH

402A. SPECIAL LIABILITY OF SELLER OF PRODUCT FOR PHYSICAL HARM TO USER OR CONSUMER
(1) One who sells any product in a defective condition unreasonably dangerous to the user or consumer or to his property is subject to liability for physical harm thereby caused to the ultimate user or consumer, or to his property, if
(a) the seller is engaged in the business of selling such a product, and
(b) it is expected to and does reach the user or consumer without substantial change in the condition in which it is sold.
(2) The rule stated in Subsection (1) applies although
(a) the seller has exercised all possible care in the preparation and sale of his product, and
(b) the user or consumer has not bought the product from or entered into any contractual relation with the seller.
Caveat:
The Institute expresses no opinion as to whether the rules stated in this Section may not apply
(1) to harm to persons other than users or consumers;
(2) to the seller of a product expected to be processed or otherwise substantially changed before it reaches the user or consumer; or
(3) to the seller of a component part of a product to be assembled.

402B. MISREPRESENTATION BY SELLER OF CHATTELS TO CONSUMER
One engaged in the business of selling chattels who, by advertising, labels, or otherwise, makes to the public a misrepresentation of a material fact concerning the character or quality of a chattel sold by him is subject to liability for physical harm to a consumer of the chattel caused by justifiable reliance upon the misrepresentation, even though
(a) it is not made fraudulently or negligently, and
(b) the consumer has not bought the chattel from or entered into any contractual relation with the seller.
Caveat:
The Institute expresses no opinion as to whether the rule stated in this Section may apply
(1) where the representation is not made to the public, but to an individual, or
(2) where physical harm is caused to one who is not a consumer of the chattel.

8.01 General Rule of Strict Liability
The supplier of a product is liable for the injuries caused to the plaintiff by a defect in the article, which existed when the product left the possession of the supplier. Such liability is imposed even if the supplier has taken all possible care in the preparation and sale of the product.

8.02 Definition of "Defect"
The manufacturer of a product is a guarantor of its safety. The product must be provided with every element necessary to make it safe for use, and without any condition that makes it unsafe for use. If you find that the product, at the time it left the defendant's control, lacked any element necessary to make it safe for use, or contained any condition that made it unsafe for use, then the product was defective and the defendant is liable for all harm caused by the defect

8.03 Duty to Warn
Even a perfectly made and designed product may be defective if not accompanied by proper warning and instructions concerning its use. A supplier must give the user or consumer any warnings and instructions of the possible risks of using the product that may be required, or that are created by the inherent limitations in the safety of such use. If you find that such warnings or instructions were not given, the defendant is liable for all harm caused by the failure to warn.