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    20 Products

    No-Spill Caps

    Image of Product. Front orientation. Protective Caps. No-Spill Caps.
    Even if beakers, bottles, and flasks are tipped upside down, liquids stay sealed inside. Tug on the tabs to stretch these caps over openings. Not only are they safer and more secure than foil or film covers, they can be used again and again. Autoclave to sterilize, or just toss in the dishwasher.
    High-Temperature Silicone Rubber—These caps withstand temperatures up to 350° F as well as exposure to chemicals such as acetone and isopropyl alcohol.
    For OD
    Flexibility
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    High-Temperature Silicone Rubber
    1 11/16" to 2 3/8"Flexible350Blue13837N1300000
    1 11/16" to 2 3/8"Flexible350Green13837N120000
    1 11/16" to 2 3/8"Flexible350Pink13837N110000
    2 1/2" to 3"Flexible350Blue13837N160000
    2 1/2" to 3"Flexible350Green13837N150000
    2 1/2" to 3"Flexible350Pink13837N140000
    3 5/16" to 4 9/16"Flexible350Blue13837N190000
    3 5/16" to 4 9/16"Flexible350Green13837N180000
    3 5/16" to 4 9/16"Flexible350Pink13837N170000
     

    Beaker Lids

    Image of Product. Front orientation. Beaker Lids.
    Cover beakers or hold small quantities of powders and solutions. These lids are also known as watch glasses.
    PTFE Lids—PTFE lids won't shatter like glass.
    For Max.
    Beaker Dia.
    Dia.
    Thk.
    Color
    Max. Temp.,
    ° F
    Autoclavable
    Each
    PTFE Lids
    1 3/4"2"0.090"White500Yes3974T51000000
    2 1/4"2 1/2"0.090"White500Yes3974T5200000
    2 7/8"3 1/8"0.090"White500Yes3974T5300000
    3 3/8"3 7/8"0.090"White500Yes3974T5400000
    3 7/8"4 7/8"0.090"White500Yes3974T5500000
     
    Soda-Lime Glass Lids
    2 1/4"2 3/4"0.047"Clear840Yes2068N110000
    2 5/8"3 1/8"0.047"Clear840Yes2068N120000
    3"3 1/2"0.047"Clear840Yes2068N130000
    3 1/2"4"0.047"Clear840Yes2068N140000
    4 1/4"4 7/8"0.047"Clear840Yes2068N1500000
    5 1/8"5 7/8"0.047"Clear840Yes2068N1600000
     
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