Cart (0)

Rubber Stoppers / Caps

When looking for rubber stoppers of different sizes and with or without holes go no further. We offer nothing but the highest quality pharmaceutical grade rubber stoppers available on the market.

List Grid

Set Descending Direction

Items 1-10 of 28

per page
Page:
  1. 1
  2. 2
  3. 3
  1. #3 Rubber Cap

    #3 Rubber Cap

    • 1-3/8" inside diameter.
    • Fits our 1 gallon gallon glass jugs.
    • Has a hole to fit all our airlocks, except the Hobby 2 airlock.
    Read More
    Price: $4.90 As low as: $3.92
  2. #5 Rubber Cap

    #5 Rubber Cap

    • 1-11/16" inside diameter.
    • Fits most large-mouth, gallon size glass jugs.
    • Has a hole to fit all our airlocks, except the Hobby 2 airlock.
    Read More
    Price: $5.20 As low as: $4.15
  3. #7 Rubber Cap

    #7 Rubber Cap

    • 1-15/16" inside diameter.
    • Fits our 3, 5, and 6 gallon glass and plastic carboys.
    • Has a hole to fit all our airlocks, except the Hobby 2 airlock.
    Read More
    Price: $5.45 As low as: $4.35
  4. #9 Rubber Cap

    #9 Rubber Cap

    • 2-3/8" inside diameter.
    • Has a hole to fit all our airlocks, except the Hobby 2 airlock.
    • These stretch over the outside of the neck of your jug.
    Read More
    Price: $7.25 As low as: $5.80
  5. #11 Rubber Cap

    #11 Rubber Cap

    • 2-5/8" inside diameter.
    • Has a hole to fit all our airlocks, except the Hobby 2 airlock.
    • These stretch over the outside of the neck of your jug.
    Read More
    Price: $8.10 As low as: $6.48
  6. #13 Rubber Cap

    #13 Rubber Cap

    • 2-13/16" inside diameter.
    • Has a hole to fit all our airlocks, except the Hobby 2 airlock.
    • These stretch over the outside of the neck of your jug.
    Read More
    Price: $9.35 As low as: $7.48
  7. Size #1 Rubber Stopper

    Size #1 Rubber Stopper

    • Top diameter 3/4". Bottom diameter 9/16".
    • Made of pharmaceutical-grade, tan color rubber.
    • Available both with and without holes.
    Read More
    Price: $1.81
  8. Size #2 Rubber Stopper

    Size #2 Rubber Stopper

    • Top diameter 13/16". Bottom diameter 5/8".
    • Fits our Poly-Fermenters, Tuff-Tanks, and wine bottles.
    • Available both with and without holes.
    Read More
    Price: $1.88
  9. Size #3 Rubber Stopper

    Size #3 Rubber Stopper

    • Top diameter 15/16". Bottom diameter 3/4".
    • Made of pharmaceutical-grade, tan color rubber.
    • Available both with and without holes.
    Read More
    Price: $1.98
  10. Size #4 Rubber Stopper

    Size #4 Rubber Stopper

    • Top diameter 1". Bottom diameter 13/16".
    • Made of pharmaceutical-grade, tan color rubber.
    • Available both with and without holes.
    Read More
    Price: $2.09

List Grid

Set Descending Direction

Items 1-10 of 28

per page
Page:
  1. 1
  2. 2
  3. 3