Mirro 9896 Gasket Mirro, Mirro-Matic Cooker Gasket S9896 Mirro Pressure Cooker Seal/Gasket PN 9896, S9896, S 9896, 9896S, M9896. IN STOCK! 9896$12.49 Order before 2:00 PM ET this item will ship same day. Orders placed after 2:00 PM will ship next business day! Soak gasket in hot water 10-15 minutes before using. Rinse and dry thoroughly. Any residue released from rubber is harmless. Lubricate gasket lightly with cooking oil or shortening the first 2 or 3 times only. See Pressure Cooker book for more detailed information.