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Item #: 668577
  • Size: Medium - 20mm Color: Black
  • Pieces Per Unit: 250
  • Units Per Case: 4
Retail: $25.70
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Availability: In Stock
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Introducing Evocore Bulk Pack Foam Rings - 250 Pack.

Designed to complement your Guardhouse coin capsules, these foam rings provide added protection and stability for your valuable coins.

Crafted from high-quality cross-link polyethylene, these rings ensure a snug fit and prevent coins from shifting within the capsules.

Specifically designed to accommodate 20 mm coins, they fit perfectly within Medium coin capsules, offering comprehensive protection for your collection.

These rings are compatible with items 724686 or 781612 for seamless integration into your coin storage system.

Coin Capsule Size Chart

Need help finding the right size capsule for your coin? We have created a list of popular U.S. Coins with their millimeter sizes listed below. Use the Ring Size (mm) column to find the recommended coin capsule size designed to fit your coin. Make sure to also use the Cap Size column to fit your capsule in a Guardhouse Display Box designed to hold S, M, L and XL sized coin capsules.

U.S. Coins Ring Size (mm) Cap Size
13 mm - Gold $1 (Type 1) 13 S
14 mm - Silver Three Cent Pieces (1851-1873) 14 S
15 mm - Gold $1 (Type 2 & 3), Commemorative Gold $1 15 S
15.5 mm - Half Dimes (1829 -1873; Capped Bust, Liberty Seated) 16 S
16.5 mm - Half Dimes (1794 -1805),  $5 American Gold Eagle - 1/10 oz, $10 Platinum American Eagle - 1/10 oz 16 S
17.9 mm - U.S. Dimes (1837 - Present) 18 S
18 mm - Nickel Three Cent Pieces (1865 -1889), Gold $2 1/2 (1840 -1929) 18 S
18.2 mm - $2 1/2 Gold Capped Head To Left Reduced Diameter (1829 -1834) 18 S
18.5 mm - Capped Bust Dime (1828 -1837), $2 1/2 Gold Capped Head To Left Lg. Dia. (1821-1827) 18 S
18.8 mm - Capped Bust Dime (1809 - 1828) 18 S
19 mm - U.S. Cents (1856 - Present), Drapped Bust Dime (1796 -1807) 19 S
20 mm - $2 1/2 Gold (1796 -1808) 20 M
20.5 mm - Shield Nickel (1866 -1883), $3 Gold (1854 -1889) 20 M
21.2 mm - U.S. Nickels (1883 - Present) 21 M
21.6 mm - $5 Gold (1840C -1929) 21 M
22 mm - 20 Cent Pieces (1875 -1878), $10 American Gold Eagle -  ¼ oz, $25 American Platinum Eagle  ¼ oz 22 M
22 mm - $5 Gold Classic Head (1834 -1838), $5 Liberty Head (1839 -1840) 22 M
22.5 mm - Braided Hair Half Cent (1840 -1857),  Two Cent Pieces (1864 -1873) 23 M
23.5 mm - Half Cents (1794 -1836) 23 M
23.8 mm - $5 Gold Cap Head (1829 -1834) 23 M
24.3 mm - U.S. Quarters (1831- Present) 24 M
25 mm - $5 Gold (1795 -1829) 25 M
26.5 mm - U.S. Small Dollars (1979 - Present), $10 First Spouse Gold 26 L
27 mm - Capped Bust Quarters (1815-1828), $10 Gold (1838 -1933), $25 American Gold Eagle - ½ oz , $50 American Platinum Eagle - ½ oz  27 L
27.5 mm - Lg. Cent Young Head (1835 -1857), Draped Bust Quarter (1796 -1807) 27 L
28/29 mm - Lg. Cent Matron Head (1816 -1835) 28 L
29 mm  -  Lg. Cent Lib. Cap (1793 -1796), Lg. Cent Bust (1796 -1807), Lg. Cent Classic (1808 -1814), Lg. Cent Matron Head (1816 -1835) 29 L
30 mm - Cap Bust Half Dollars (1836 -1839) 30 L
30.6 mm - U.S. Half Dollars (1839 - Present), Half Dollar Commemoratives) 30 L
32 mm - 1/2 oz. Silver Rounds 32 L
32.5 mm - U.S. Half Dollars (1794 -1836; Flowing Hair, Draped Bust, Cap Bust) 32 L
32.7 mm - 1 oz. Gold Eagle $50, 1 oz. Gold Buffalo, 1 oz. $100 American Platinum Eagle 32 L
33 mm - $10 Gold Capped Bust to Right (1795 -1804), First Spouse Bronze Coin 33 XL
34 mm - $20 Liberty Gold, $20 St. Gaudens Gold 34 XL
37 mm - $7 Silver Strike 37 XL
38.1 mm - U.S. Large Dollars (1840 -1978; Liberty Seated, Trade, Morgan, Peace, Eisenhower), Modern 1 oz Silver Commemoratives 38 XL
39 - 39.4 mm - 1 oz. Silver Rounds, 1 oz. Copper Rounds, US Dollars (1794 - 1839 measure), Standard Casino Chips 39 XL
40.6 mm - 1 oz American Silver Eagle 40 XL
41 mm - Various Casino Tokens & Chips 41 XL