Desiccant packets contain silica gel, molecular sieve, activated carbon, or clay, and are placed in sealed environments to adsorb moisture. These packs help to protect moisture-sensitive products, including foods, medical devices, and electronics, and can be used in packaging or in a closed environment such as a safe or a gun case. These sorbents are also available in bulk rather than packets.
IMPAK is a world leader in the production and distribution of moisture adsorbing desiccants. With over 100 different desiccant products, the ability to create custom blends (for instance, by mixing activated carbon with silica gel, we can create a desiccant product capable of adsorbing both odor and moisture), and competitive pricing, your options are virtually endless.
Please note that the information on this page is not meant to be exhaustive. For a more thorough overview, please refer to our Desiccant Guide page. If you have an application that requires product specifications or a blend not listed here, contact us at: (310) 715-6600
SPECIAL OFFER
Take advantage our our high production volume and low prices on 3g Non-Indicating Silica Gel Packets
| Part Number | Gram Weight | Description | Order |
|---|---|---|---|
| Per Pack: 39SG31 Per Case: 39SG01 |
0.25 gram | Non-Indicating Silica Gel 0.625" x 0.75" 3,000 packets/pack 30,000 packets/case |
1 pack: $99.25 1 case: $509.95 2+ cases: $463.50/case 5+ cases: $424.95/case 10+ cases: $392.20/case |
| Per Pack: 39SG33 Per Case: 39SG03 |
0.5 gram | Non-Indicating Silica Gel 0.67" x 1" 2,000 packets/pack 20,000 packets/case |
1 pack: $109.15 1 case: $463.30 2+ cases: $448.35/case 5+ cases: $434.80/case 10+ cases: $374.55/case |
| Per Pack: 39SG35 Per Case: 39SG05 |
0.75 gram | Non-Indicating Silica Gel 0.75" x 1.25" 1,500 packets/pack 15,000 packets/case |
1 pack: $99.25 1 case: $409.35 2+ cases: $395.60/case 5+ cases: $368.15/case 10+ cases: $341.20/case |
| Per Pack: 39SG37 Per Case: 39SG07 |
1.0 gram | Non-Indicating Silica Gel 0.75" x 1.375" 1,000 packets/pack 10,000 packets/case |
1 pack: $99.25 1 case: $340.00 2+ cases: $309.05/case 5+ cases: $283.25/case 10+ cases: $261.55/case |
| Per Pack: 39SG39 Per Case: 39SG09 |
1.5 gram | Non-Indicating Silica Gel 0.75" x 1.675" 900 packets/pack 9,000 packets/case |
1 pack: $99.25 1 case: $363.60br /> 2+ cases: $335.20/case 5+ cases: $308.25/case 10+ cases: $294.15/case |
| Per Pack: 39SG41 Per Case: 39SG11 |
2.0 gram | Non-Indicating Silica Gel 0.75" x 2.0" 600 packets/pack 6,000 packets/case |
1 pack: $99.25 1 case: $301.90 2+ cases: $274.45/case 5+ cases: $251.60/case 10+ cases: $232.25/case |
| Per Pack: 39SG42 Per Case: 39SG12 |
3.0 gram | Non-Indicating Silica Gel 1.0" x 2.0" 500 packets/pack 5,000 packets/case |
1 pack: $99.25 1 case: $373.90 2+ cases: $340.00/case 5+ cases: $311.70/case 10+ cases: $287.70/case |
| Per Pack: 50MF395G12C5FB Per Case: n/a |
3.0 gram
| Non-Indicating Silica Gel 3.0 Grams StayDry™ Silica Gel Packets packaged in PAKFLEXMF50 (Unisel product aka GDT-Il) 500 packets/pack |
1 pack: $24.45 |
| Per Pack: 39SG45 Per Case: 39SG15 |
5.0 gram | Non-Indicating Silica Gel 1.0" x 2.75" 300 packets/pack 3,000 packets/case |
1 pack: $99.25 1 case: $307.55 2+ cases: $279.50/case 5+ cases: $256.30/case 10+ cases: $236.30/case |
| Per Case: 39SG17 | 7.0 gram | Non-Indicating Silica Gel 1.0" x 3.125" 2,200 packets/case |
1 case: $261.80 2+ cases: $238.00/case 5+ cases: $218.15/case 10+ cases: $201.40/case |
| Per Pack: 39SG49 Per Case: 39SG19 |
10.0 gram | Non-Indicating Silica Gel 1.0" x 4.125" 180 packets/pack 1,800 packets/case |
1 pack: $99.25 1 case: $397.84 2+ cases: $361.60/case 5+ cases: $331.57/case 10+ cases: $307.08/case |
| Per Case: 39SG23 | 14.0 gram | Non-Indicating Silica Gel 1.5" x 3.125" 1,200 packets/case |
1 case: $213.90 2+ cases: $196.82/case 5+ cases: $181.84/case 10+ cases: $166.86/case |
| Part Number | Gram Weight | Description | Order |
|---|---|---|---|
| Per Pack: 40ISG33 Per Case: 40ISG03 |
0.5 gram | Indicating Silica Gel 0.625" x 1.0" 2,000 packets/pack 20,000 packets/case |
1 pack: $99.25 1 case: $448.75 2+ cases: $407.95/case 5+ cases: $373.90/case 10+ cases: $345.20/case |
| Per Pack: 40ISG37 Per Case: 40ISG07 |
1.0 gram | Indicating Silica Gel 0.75" x 1.375" 1,000 packets/pack 10,000 packets/case |
1 pack: $99.25 1 case: $390.90 2+ cases: $355.40/case 5+ cases: $325.85/case 10+ cases: $300.75/case |
| Per Pack: 40ISG41 Per Case: 40ISG11 |
2.0 gram | Indicating Silica Gel 0.75" x 2.0" 600 packets/pack 6,000 packets/case |
1 pack: $99.25 1 case: $346.70 2+ cases: $315.25/case 5+ cases: $289.00/case 10+ cases: $266.79/case |
| Per Pack: 40ISG45 Per Case: 40ISG15 |
5.0 gram | Indicating Silica Gel 1.0" x 2.75" 300 packets/pack 3,000 packets/case |
1 pack: $99.25 1 case: $383.40 2+ cases: $384.60/case 5+ cases: $319.60/case 10+ cases: $295.00/case |
| Per Pack: 40ISG47 Per Case: 40ISG17 |
7.0 gram | Indicating Silica Gel 1.0" x 3.125" 220 packets/pack 2,200 packets/case |
1 pack: $99.25 1 case: $336.60 2+ cases: $306.00/case 5+ cases: $281.60/case 10+ cases: $258.85/case |
| Per Pack: 40ISG49 Per Case: 40ISG19 |
10.0 gram | Indicating Silica Gel 1.0" x 4.125" 180 packets/pack 1,800 packets/case |
1 pack: $99.25 1 case: $389.85 2+ cases: $354.45/case 5+ cases: $325.00/case 10+ cases: $299.90/case |
| Per Pack: 40ISG53 Per Case: 40ISG23 |
14.0 gram | Indicating Silica Gel 1.5" x 3.125" 120 packets/pack 1,200 packets/case |
1 pack: $99.25 1 case: $344.35 2+ cases: $313.05/case 5+ cases: $286.90/case 10+ cases: $264.85/case |
Molecular sieves retain their ability to adsorb water molecules over a much wider spectrum of temperatures than other desiccant materials. Molecular
sieves also have a much higher equilibrium capacity for water vapor under very low humidity conditions.
Molecular sieves contain a uniform network of crystalline pores and empty adsorption cavities, which give it an internal adsorptive surface area of 700 to 800 gm2 (1/2 the total volume of the crystals). Because of its uniform structure, molecular sieves will not desorb moisture into the package as readily as silica gel or clay as temperatures rise. Being synthetic rather than naturally occurring, molecular sieve is higher in cost per unit, but due to its extremely large range of adsorptive capabilities, it is often the best value.
Read more about why
Molecular Sieve Is the Best Desiccant
| Part Number | Gram Weight | Description | Order |
|---|---|---|---|
| Per Pack: 41MS31 Per Case: 41MS01 |
0.25 gram | Molecular Sieve 0.625" x 0.75" 3,000 packets/pack 30,000 packets/case |
1 pack: $99.25 1 case: $528.00 2+ cases: $480.00/case 5+ cases: $440.00/case 10+ cases: $406.15/case |
| Per Pack: 41MS33 Per Case: 41MS03 |
0.5 gram | Molecular Sieve 0.67" x 1" 2,000 packets/pack 20,000 packets/case |
1 pack: $99.25 1 case: $448.00 2+ cases: $407.30/case 5+ cases: $373.35/case 10+ cases: $344.60/case |
| Per Pack: 41MS35 Per Case: 41MS05 |
0.75 gram | Molecular Sieve 0.67" x 1.375" 1,500 packets/pack 15,000 packets/case |
1 pack: $99.25 1 case: $408.40 2+ cases: $367.55/case 5+ cases: $347.10/case 10+ cases: $306.30/case |
| Per Pack: 41MS37 Per Case: 41MS07 |
1.0 gram | Molecular Sieve 0.75" x 1.375" 1,000 packets/pack 10,000 packets/case |
1 pack: $99.25 1 case: $320.00 2+ cases: $290.95/case 5+ cases: $266.70/case 10+ cases: $246.15/case |
| Per Pack: 41MS41 Per Case: 41MS11 |
2.0 gram | Molecular Sieve 0.75" x 1.89" 600 packets/pack 6,000 packets/case |
1 pack: $99.25 1 case: $349.45 2+ cases: $317.70/case 5+ cases: $291.25/case 10+ cases: $268.80/case |
| Per Pack: 41MS43 Per Case: 41MS13 |
3.5 gram |
13X Molecular Sieve 1.0" x 2.17" 500 packets/pack 5,000 packets/case |
1 pack: $69.80 1 case: $359.25 2+ cases: $326.55/case 5+ cases: $299.35/case 10+ cases: $276.35/case |
| Per Pack: 41MS45 Per Case: 41MS15 |
5.0 gram | Molecular Sieve 1.0" x 2.75" 300 packets/pack 3,000 packets/case |
1 pack: $99.25 1 case: $314.90 2+ cases: $286.25/case 5+ cases: $262.40/case 10+ cases: $242.25/case |
| Per Pack: 102AG47 Per Case: 102AG17 |
7.0 gram | 13X Molecular Sieve 200 packets/pack 2,000 packets/case |
1 pack: $99.25 1 case: $449.50 2+ cases: $424.15/case 5+ cases: $385.40/case 10+ cases: $356.85/case |
| Per Pack: 41MS49 Per Case: 41MS19 |
10.0 gram | Molecular Sieve 1.0" x 4.15" 180 packets/pack 1,800 packets/case |
1 pack: $99.25 1 case: $321.40 2+ cases: $292.20/case 5+ cases: $267.85/case 10+ cases: $247.25/case |
| Per Pack: U1MSNWPPK Per Case: U1MSNWP |
28.0 gram | Molecular Sieve 3.0" x 4.375" 50 packets/pack 550 packets/case |
1 pack: $30.50 2+ packs: $26.75/pack 5+ packs: $21.95/pack 11+ packs: $19.85/pack 1 case: $218.05 |
| Each: U2MSTPIFB Per Pack: U2MSTP |
56.0 gram | 4A Molecular Sieve 3.0" x 5.5" Sold Individually or 150/pack |
1: $3.25 50+: $3.00 each 100+: $2.70 each 1 pack: $400.05 |
| Image | Part Number | Description | Order |
|---|---|---|---|
 |
ASYMSPS | 250 Superpoly™ 8.5" x 13" Vacuum Seal Bags (V4R08513), 250 Molecular Sieve Packets - 3.5 gram 13X (P/N:41MS13) & 250 Moisture Indicating Cards - 8% RH (HIC0108BBC) |
$87.50 |
Activated Carbon Desiccant packets for easy odor control in packaging and storage.
| Part Number | Gram Weight | Description | Order |
|---|---|---|---|
| Pack of 200: 42AC45 Case: 42AC15 |
5.0 gram | Activated Carbon 200 packets/pack 2,000 packets/case |
1 pack: $99.25 1 case: $309.00 2+ cases: $296.15/case 5+ cases: $274.45/case |
Calcium oxide, also known as quicklime, is a type of calcinated or recalcinated lime with a moisture-adsorptive capacity of at least 28.5% by weight. Its key characteristic is its ability to adsorb significantly more water vapor at very low relative humidity levels compared to other materials. This makes it highly effective in situations requiring low critical relative humidity and high moisture concentrations.
| Part Number | Gram Weight | Description | Order |
|---|---|---|---|
| 37CAO15 | 5.0 gram | Calcium Oxide Size: 1.38" x 2.80" 2 tins containing 1,500/tin 3,000 packets/case |
1 case: $215.30 2+ cases: $192.10/case 5+ cases: $158.95/case 10+ cases: $147.85/case |
Clay works effectively at temperatures below 120°F (49°C). Clay is 100% natural, non-toxic, biodegradable, and environmentally safe.
| Part Number | Gram Weight | Description | Order |
|---|---|---|---|
| 38MC05 | 0.5 gram | Clay 0.625" x 1.0625" 20,000 packets/case |
1 case: $509.95 2+ cases: $463.50/case 5+ cases: $424.95/case 10+ cases: $392.20/case |
| 016WP1500CU | 5.5 gram | Clay 2.25" x 2.55" 3,000 packets/case |
1 case: $271.75 2+ cases: $235.90/case 5+ cases: $215.45/case 10+ cases: $199.65/case |
| 016WP100CU | 5.5 gram | Clay 2.25" x 2.55" 100 packets/pack |
1 pack: $18.55 2+ packs: $15.15/pack |
| UF13CTN960 | 11 gram | Clay 2.25" x 3.125" 960 packets/case |
1 case: $129.25 2+ cases: $107.55/case |
| UF13PE80 | 11 gram | Clay 2.25" x 3.125" 80 packets/pack |
1 pack: $21.60 2+ packs: $18.55/pack |
| 2050DCC01 | 33 gram | Clay 3.0" x 3.5" 50 packets/pack |
1 pack: $16.90 6+ packs: $16.20/pack |
| U2CTP | 66 gram | Clay 3.0" x 5.125" 300 packets/case |
1 case: $119.90 2+ cases: $105.35/case |
| U2CTP30PK | 66 gram | Clay 3.0" x 5.125" 30 packets/pack |
1 pack: $36.35 2+ packs: $31.80/pack 5+ pack: $27.45/pack |
| MT4USD | ~132 gram | Clay 3.75" x 5.5" x 0.5" 200 packets/case |
1 case: $205.15 |
| U8CT | 264 gram | Clay 4.125" x 8.0" 100 packets/pack |
1 pack: $135.25 2+ packs: $107.90/pack |
| 10MFS2030U16 | 528 gram |
Clay 5.5" x 7.875" 10 packets/pack |
1 pack: $33.55 2+ packs: $26.75/pack |